diff --git a/dev/bots/analyze-sample-code.dart b/dev/bots/analyze-sample-code.dart
index a3087b7..8662d33 100644
--- a/dev/bots/analyze-sample-code.dart
+++ b/dev/bots/analyze-sample-code.dart
@@ -218,6 +218,7 @@
 linter:
   rules:
     - unnecessary_const
+    - unnecessary_new
 ''');
     print('Found $sampleCodeSections sample code sections.');
     final Process process = await Process.start(
@@ -314,18 +315,20 @@
   exit(exitCode);
 }
 
+final RegExp _constructorRegExp = new RegExp(r'[A-Z][a-zA-Z0-9<>.]*\(');
+
 int _expressionId = 0;
 
 void processBlock(Line line, List<String> block, List<Section> sections) {
   if (block.isEmpty)
     throw '$line: Empty ```dart block in sample code.';
-  if (block.first.startsWith('new ') || block.first.startsWith('const ')) {
+  if (block.first.startsWith('new ') || block.first.startsWith('const ') || block.first.startsWith(_constructorRegExp)) {
     _expressionId += 1;
     sections.add(new Section(line, 'dynamic expression$_expressionId = ', block.toList(), ';'));
   } else if (block.first.startsWith('await ')) {
     _expressionId += 1;
     sections.add(new Section(line, 'Future<Null> expression$_expressionId() async { ', block.toList(), ' }'));
-  } else if (block.first.startsWith('class ')) {
+  } else if (block.first.startsWith('class ') || block.first.startsWith('enum ')) {
     sections.add(new Section(line, null, block.toList(), null));
   } else {
     final List<String> buffer = <String>[];
diff --git a/dev/bots/test/analyze-sample-code_test.dart b/dev/bots/test/analyze-sample-code_test.dart
index 0774eea..8eb1f11 100644
--- a/dev/bots/test/analyze-sample-code_test.dart
+++ b/dev/bots/test/analyze-sample-code_test.dart
@@ -30,8 +30,10 @@
       "$directory/main.dart:5:8: Unused import: 'dart:ui'",
       "$directory/main.dart:6:8: Unused import: 'package:flutter_test/flutter_test.dart'",
       "$directory/main.dart:9:8: Target of URI doesn't exist: 'package:flutter/known_broken_documentation.dart'",
+      'test/analyze-sample-code-test-input/known_broken_documentation.dart:27:5: Unnecessary new keyword (unnecessary_new)',
       "test/analyze-sample-code-test-input/known_broken_documentation.dart:27:9: Undefined class 'Opacity' (undefined_class)",
       "test/analyze-sample-code-test-input/known_broken_documentation.dart:29:20: Undefined class 'Text' (undefined_class)",
+      'test/analyze-sample-code-test-input/known_broken_documentation.dart:39:5: Unnecessary new keyword (unnecessary_new)',
       "test/analyze-sample-code-test-input/known_broken_documentation.dart:39:9: Undefined class 'Opacity' (undefined_class)",
       "test/analyze-sample-code-test-input/known_broken_documentation.dart:41:20: Undefined class 'Text' (undefined_class)",
       'test/analyze-sample-code-test-input/known_broken_documentation.dart:42:5: unexpected comma at end of sample code',
diff --git a/packages/flutter/lib/src/animation/animations.dart b/packages/flutter/lib/src/animation/animations.dart
index 203f9af..78c3c70 100644
--- a/packages/flutter/lib/src/animation/animations.dart
+++ b/packages/flutter/lib/src/animation/animations.dart
@@ -318,11 +318,10 @@
 /// linear animation produced by an [AnimationController]:
 ///
 /// ``` dart
-///     final AnimationController controller =
-///         new AnimationController(duration: const Duration(milliseconds: 500));
-///     final CurvedAnimation animation =
-///         new CurvedAnimation(parent: controller, curve: Curves.ease);
+/// final AnimationController controller = AnimationController(duration: const Duration(milliseconds: 500));
+/// final CurvedAnimation animation = CurvedAnimation(parent: controller, curve: Curves.ease);
 ///```
+///
 /// Depending on the given curve, the output of the [CurvedAnimation] could have
 /// a wider range than its input. For example, elastic curves such as
 /// [Curves.elasticIn] will significantly overshoot or undershoot the default
diff --git a/packages/flutter/lib/src/animation/tween.dart b/packages/flutter/lib/src/animation/tween.dart
index 9b5ae11..02e74af 100644
--- a/packages/flutter/lib/src/animation/tween.dart
+++ b/packages/flutter/lib/src/animation/tween.dart
@@ -97,7 +97,7 @@
 /// `_animation`:
 ///
 /// ```dart
-/// Animation<Offset> _animation = new Tween<Offset>(
+/// Animation<Offset> _animation = Tween<Offset>(
 ///   begin: const Offset(100.0, 50.0),
 ///   end: const Offset(200.0, 300.0),
 /// ).animate(_controller);
diff --git a/packages/flutter/lib/src/animation/tween_sequence.dart b/packages/flutter/lib/src/animation/tween_sequence.dart
index c1f8fd0..ce079b8 100644
--- a/packages/flutter/lib/src/animation/tween_sequence.dart
+++ b/packages/flutter/lib/src/animation/tween_sequence.dart
@@ -16,21 +16,21 @@
 /// animation, remain at 10.0 for the next 20%, and then return to
 /// 10.0 for the final 40%:
 ///
-/// ```
-/// final Animation<double> = new TweenSequence(
+/// ```dart
+/// final Animation<double> = TweenSequence(
 ///   <TweenSequenceItem<double>>[
-///     new TweenSequenceItem<double>(
-///       tween: new Tween<double>(begin: 5.0, end: 10.0)
-///         .chain(new CurveTween(curve: Curves.ease)),
+///     TweenSequenceItem<double>(
+///       tween: Tween<double>(begin: 5.0, end: 10.0)
+///         .chain(CurveTween(curve: Curves.ease)),
 ///       weight: 40.0,
 ///     ),
-///     new TweenSequenceItem<double>(
-///       tween: new ConstantTween<double>(10.0),
+///     TweenSequenceItem<double>(
+///       tween: ConstantTween<double>(10.0),
 ///       weight: 20.0,
 ///     ),
-///     new TweenSequenceItem<double>(
-///       tween: new Tween<double>(begin: 10.0, end: 5.0)
-///         .chain(new CurveTween(curve: Curves.ease)),
+///     TweenSequenceItem<double>(
+///       tween: Tween<double>(begin: 10.0, end: 5.0)
+///         .chain(CurveTween(curve: Curves.ease)),
 ///       weight: 40.0,
 ///     ),
 ///   ],
@@ -102,9 +102,10 @@
   ///
   /// The value of this item can be "curved" by chaining it to a [CurveTween].
   /// For example to create a tween that eases from 0.0 to 10.0:
-  /// ```
-  /// new Tween<double>(begin: 0.0, end: 10.0)
-  ///   .chain(new CurveTween(curve: Curves.ease))
+  ///
+  /// ```dart
+  /// Tween<double>(begin: 0.0, end: 10.0)
+  ///   .chain(CurveTween(curve: Curves.ease))
   /// ```
   final Animatable<T> tween;
 
diff --git a/packages/flutter/lib/src/cupertino/segmented_control.dart b/packages/flutter/lib/src/cupertino/segmented_control.dart
index 551c0b9..7b9a880 100644
--- a/packages/flutter/lib/src/cupertino/segmented_control.dart
+++ b/packages/flutter/lib/src/cupertino/segmented_control.dart
@@ -130,7 +130,7 @@
   /// ```dart
   /// class SegmentedControlExample extends StatefulWidget {
   ///   @override
-  ///   State createState() => new SegmentedControlExampleState();
+  ///   State createState() => SegmentedControlExampleState();
   /// }
   ///
   /// class SegmentedControlExampleState extends State<SegmentedControlExample> {
@@ -143,8 +143,8 @@
   ///
   ///   @override
   ///   Widget build(BuildContext context) {
-  ///     return new Container(
-  ///       child: new CupertinoSegmentedControl<int>(
+  ///     return Container(
+  ///       child: CupertinoSegmentedControl<int>(
   ///         children: children,
   ///         onValueChanged: (int newValue) {
   ///           setState(() {
diff --git a/packages/flutter/lib/src/cupertino/slider.dart b/packages/flutter/lib/src/cupertino/slider.dart
index 90fd190..62b54f8 100644
--- a/packages/flutter/lib/src/cupertino/slider.dart
+++ b/packages/flutter/lib/src/cupertino/slider.dart
@@ -83,7 +83,7 @@
   /// gets rebuilt; for example:
   ///
   /// ```dart
-  /// new CupertinoSlider(
+  /// CupertinoSlider(
   ///   value: _cupertinoSliderValue.toDouble(),
   ///   min: 1.0,
   ///   max: 10.0,
@@ -116,7 +116,7 @@
   /// ## Sample code
   ///
   /// ```dart
-  /// new CupertinoSlider(
+  /// CupertinoSlider(
   ///   value: _cupertinoSliderValue.toDouble(),
   ///   min: 1.0,
   ///   max: 10.0,
@@ -147,7 +147,7 @@
   /// ## Sample code
   ///
   /// ```dart
-  /// new CupertinoSlider(
+  /// CupertinoSlider(
   ///   value: _cupertinoSliderValue.toDouble(),
   ///   min: 1.0,
   ///   max: 10.0,
diff --git a/packages/flutter/lib/src/cupertino/switch.dart b/packages/flutter/lib/src/cupertino/switch.dart
index bad32ec..69cc68c 100644
--- a/packages/flutter/lib/src/cupertino/switch.dart
+++ b/packages/flutter/lib/src/cupertino/switch.dart
@@ -29,10 +29,10 @@
 /// for accessibility tools.
 ///
 /// ```dart
-/// new MergeSemantics(
-///   child: new ListTile(
-///     title: new Text('Lights'),
-///     trailing: new CupertinoSwitch(
+/// MergeSemantics(
+///   child: ListTile(
+///     title: Text('Lights'),
+///     trailing: CupertinoSwitch(
 ///       value: _lights,
 ///       onChanged: (bool value) { setState(() { _lights = value; }); },
 ///     ),
@@ -70,7 +70,7 @@
   /// gets rebuilt; for example:
   ///
   /// ```dart
-  /// new CupertinoSwitch(
+  /// CupertinoSwitch(
   ///   value: _giveVerse,
   ///   onChanged: (bool newValue) {
   ///     setState(() {
diff --git a/packages/flutter/lib/src/cupertino/tab_scaffold.dart b/packages/flutter/lib/src/cupertino/tab_scaffold.dart
index 793d091..7f80de0 100644
--- a/packages/flutter/lib/src/cupertino/tab_scaffold.dart
+++ b/packages/flutter/lib/src/cupertino/tab_scaffold.dart
@@ -27,32 +27,32 @@
 /// A sample code implementing a typical iOS information architecture with tabs.
 ///
 /// ```dart
-/// new CupertinoTabScaffold(
-///   tabBar: new CupertinoTabBar(
+/// CupertinoTabScaffold(
+///   tabBar: CupertinoTabBar(
 ///     items: <BottomNavigationBarItem> [
 ///       // ...
 ///     ],
 ///   ),
 ///   tabBuilder: (BuildContext context, int index) {
-///     return new CupertinoTabView(
+///     return CupertinoTabView(
 ///       builder: (BuildContext context) {
-///         return new CupertinoPageScaffold(
-///           navigationBar: new CupertinoNavigationBar(
-///             middle: new Text('Page 1 of tab $index'),
+///         return CupertinoPageScaffold(
+///           navigationBar: CupertinoNavigationBar(
+///             middle: Text('Page 1 of tab $index'),
 ///           ),
-///           child: new Center(
-///             child: new CupertinoButton(
+///           child: Center(
+///             child: CupertinoButton(
 ///               child: const Text('Next page'),
 ///               onPressed: () {
 ///                 Navigator.of(context).push(
-///                   new CupertinoPageRoute<Null>(
+///                   CupertinoPageRoute<Null>(
 ///                     builder: (BuildContext context) {
-///                       return new CupertinoPageScaffold(
-///                         navigationBar: new CupertinoNavigationBar(
-///                           middle: new Text('Page 2 of tab $index'),
+///                       return CupertinoPageScaffold(
+///                         navigationBar: CupertinoNavigationBar(
+///                           middle: Text('Page 2 of tab $index'),
 ///                         ),
-///                         child: new Center(
-///                           child: new CupertinoButton(
+///                         child: Center(
+///                           child: CupertinoButton(
 ///                             child: const Text('Back'),
 ///                             onPressed: () { Navigator.of(context).pop(); },
 ///                           ),
diff --git a/packages/flutter/lib/src/foundation/basic_types.dart b/packages/flutter/lib/src/foundation/basic_types.dart
index 990586d..7c8b162 100644
--- a/packages/flutter/lib/src/foundation/basic_types.dart
+++ b/packages/flutter/lib/src/foundation/basic_types.dart
@@ -183,7 +183,7 @@
   ///     yield index;
   ///  }
   ///
-  /// Iterable<int> i = new CachingIterable<int>(range(1, 5).iterator);
+  /// Iterable<int> i = CachingIterable<int>(range(1, 5).iterator);
   /// print(i.length); // walks the list
   /// print(i.length); // efficient
   /// ```
diff --git a/packages/flutter/lib/src/foundation/diagnostics.dart b/packages/flutter/lib/src/foundation/diagnostics.dart
index 2123c7f..d599833 100644
--- a/packages/flutter/lib/src/foundation/diagnostics.dart
+++ b/packages/flutter/lib/src/foundation/diagnostics.dart
@@ -1015,17 +1015,17 @@
 /// of an actual property of the object:
 ///
 /// ```dart
-/// new MessageProperty('table size', '$columns\u00D7$rows')
+/// MessageProperty('table size', '$columns\u00D7$rows')
 /// ```
 /// ```dart
-/// new MessageProperty('usefulness ratio', 'no metrics collected yet (never painted)')
+/// MessageProperty('usefulness ratio', 'no metrics collected yet (never painted)')
 /// ```
 ///
 /// On the other hand, [StringProperty] is better suited when the property has a
 /// concrete value that is a string:
 ///
 /// ```dart
-/// new StringProperty('name', _name)
+/// StringProperty('name', _name)
 /// ```
 ///
 /// See also:
@@ -1322,7 +1322,7 @@
 /// ## Sample code
 ///
 /// ```dart
-/// new FlagProperty(
+/// FlagProperty(
 ///   'visible',
 ///   value: true,
 ///   ifFalse: 'hidden',
@@ -1334,7 +1334,7 @@
 /// property value.
 ///
 /// ```dart
-/// new FlagProperty(
+/// FlagProperty(
 ///   'inherit',
 ///   value: inherit,
 ///   ifTrue: '<all styles inherited>',
@@ -2162,12 +2162,12 @@
   ///  * Specify `showName` and `showSeparator` in rare cases where the string
   ///    output would look clumsy if they were not set.
   ///    ```dart
-  ///    new DiagnosticsProperty<Object>('child(3, 4)', null, ifNull: 'is null', showSeparator: false).toString()
+  ///    DiagnosticsProperty<Object>('child(3, 4)', null, ifNull: 'is null', showSeparator: false).toString()
   ///    ```
   ///    Shows using `showSeparator` to get output `child(3, 4) is null` which
   ///    is more polished than `child(3, 4): is null`.
   ///    ```dart
-  ///    new DiagnosticsProperty<IconData>('icon', icon, ifNull: '<empty>', showName: false)).toString()
+  ///    DiagnosticsProperty<IconData>('icon', icon, ifNull: '<empty>', showName: false)).toString()
   ///    ```
   ///    Shows using `showName` to omit the property name as in this context the
   ///    property name does not add useful information.
@@ -2227,25 +2227,25 @@
   ///
   ///     // Omit the property name 'message' when displaying this String property
   ///     // as it would just add visual noise.
-  ///     properties.add(new StringProperty('message', message, showName: false));
+  ///     properties.add(StringProperty('message', message, showName: false));
   ///
-  ///     properties.add(new DoubleProperty('stepWidth', stepWidth));
+  ///     properties.add(DoubleProperty('stepWidth', stepWidth));
   ///
   ///     // A scale of 1.0 does nothing so should be hidden.
-  ///     properties.add(new DoubleProperty('scale', scale, defaultValue: 1.0));
+  ///     properties.add(DoubleProperty('scale', scale, defaultValue: 1.0));
   ///
   ///     // If the hitTestExtent matches the paintExtent, it is just set to its
   ///     // default value so is not relevant.
-  ///     properties.add(new DoubleProperty('hitTestExtent', hitTestExtent, defaultValue: paintExtent));
+  ///     properties.add(DoubleProperty('hitTestExtent', hitTestExtent, defaultValue: paintExtent));
   ///
   ///     // maxWidth of double.infinity indicates the width is unconstrained and
   ///     // so maxWidth has no impact.,
-  ///     properties.add(new DoubleProperty('maxWidth', maxWidth, defaultValue: double.infinity));
+  ///     properties.add(DoubleProperty('maxWidth', maxWidth, defaultValue: double.infinity));
   ///
   ///     // Progress is a value between 0 and 1 or null. Showing it as a
   ///     // percentage makes the meaning clear enough that the name can be
   ///     // hidden.
-  ///     properties.add(new PercentProperty(
+  ///     properties.add(PercentProperty(
   ///       'progress',
   ///       progress,
   ///       showName: false,
@@ -2253,16 +2253,16 @@
   ///     ));
   ///
   ///     // Most text fields have maxLines set to 1.
-  ///     properties.add(new IntProperty('maxLines', maxLines, defaultValue: 1));
+  ///     properties.add(IntProperty('maxLines', maxLines, defaultValue: 1));
   ///
   ///     // Specify the unit as otherwise it would be unclear that time is in
   ///     // milliseconds.
-  ///     properties.add(new IntProperty('duration', duration.inMilliseconds, unit: 'ms'));
+  ///     properties.add(IntProperty('duration', duration.inMilliseconds, unit: 'ms'));
   ///
   ///     // Tooltip is used instead of unit for this case as a unit should be a
   ///     // terse description appropriate to display directly after a number
   ///     // without a space.
-  ///     properties.add(new DoubleProperty(
+  ///     properties.add(DoubleProperty(
   ///       'device pixel ratio',
   ///       ui.window.devicePixelRatio,
   ///       tooltip: 'physical pixels per logical pixel',
@@ -2270,12 +2270,12 @@
   ///
   ///     // Displaying the depth value would be distracting. Instead only display
   ///     // if the depth value is missing.
-  ///     properties.add(new ObjectFlagProperty<int>('depth', depth, ifNull: 'no depth'));
+  ///     properties.add(ObjectFlagProperty<int>('depth', depth, ifNull: 'no depth'));
   ///
   ///     // bool flag that is only shown when the value is true.
-  ///     properties.add(new FlagProperty('using primary controller', value: primary));
+  ///     properties.add(FlagProperty('using primary controller', value: primary));
   ///
-  ///     properties.add(new FlagProperty(
+  ///     properties.add(FlagProperty(
   ///       'isCurrent',
   ///       value: isCurrent,
   ///       ifTrue: 'active',
@@ -2283,20 +2283,20 @@
   ///       showName: false,
   ///     ));
   ///
-  ///     properties.add(new DiagnosticsProperty<bool>('keepAlive', keepAlive));
+  ///     properties.add(DiagnosticsProperty<bool>('keepAlive', keepAlive));
   ///
   ///     // FlagProperty could have also been used in this case.
   ///     // This option results in the text "obscureText: true" instead
   ///     // of "obscureText" which is a bit more verbose but a bit clearer.
-  ///     properties.add(new DiagnosticsProperty<bool>('obscureText', obscureText, defaultValue: false));
+  ///     properties.add(DiagnosticsProperty<bool>('obscureText', obscureText, defaultValue: false));
   ///
-  ///     properties.add(new EnumProperty<TextAlign>('textAlign', textAlign, defaultValue: null));
-  ///     properties.add(new EnumProperty<ImageRepeat>('repeat', repeat, defaultValue: ImageRepeat.noRepeat));
+  ///     properties.add(EnumProperty<TextAlign>('textAlign', textAlign, defaultValue: null));
+  ///     properties.add(EnumProperty<ImageRepeat>('repeat', repeat, defaultValue: ImageRepeat.noRepeat));
   ///
   ///     // Warn users when the widget is missing but do not show the value.
-  ///     properties.add(new ObjectFlagProperty<Widget>('widget', widget, ifNull: 'no widget'));
+  ///     properties.add(ObjectFlagProperty<Widget>('widget', widget, ifNull: 'no widget'));
   ///
-  ///     properties.add(new IterableProperty<BoxShadow>(
+  ///     properties.add(IterableProperty<BoxShadow>(
   ///       'boxShadow',
   ///       boxShadow,
   ///       defaultValue: null,
@@ -2304,7 +2304,7 @@
   ///     ));
   ///
   ///     // Getting the value of size throws an exception unless hasSize is true.
-  ///     properties.add(new DiagnosticsProperty<Size>.lazy(
+  ///     properties.add(DiagnosticsProperty<Size>.lazy(
   ///       'size',
   ///       () => size,
   ///       description: '${ hasSize ? size : "MISSING" }',
@@ -2314,7 +2314,7 @@
   ///     // good terse description, write a DiagnosticsProperty subclass as in
   ///     // the case of TransformProperty which displays a nice debugging view
   ///     // of a Matrix4 that represents a transform.
-  ///     properties.add(new TransformProperty('transform', transform));
+  ///     properties.add(TransformProperty('transform', transform));
   ///
   ///     // If the value class has a good `toString` method, use
   ///     // DiagnosticsProperty<YourValueType>. Specifying the value type ensures
@@ -2322,11 +2322,11 @@
   ///     // provide the right UI affordances. For example, in this case even
   ///     // if color is null, a debugging tool still knows the value is a Color
   ///     // and can display relevant color related UI.
-  ///     properties.add(new DiagnosticsProperty<Color>('color', color));
+  ///     properties.add(DiagnosticsProperty<Color>('color', color));
   ///
   ///     // Use a custom description to generate a more terse summary than the
   ///     // `toString` method on the map class.
-  ///     properties.add(new DiagnosticsProperty<Map<Listenable, VoidCallback>>(
+  ///     properties.add(DiagnosticsProperty<Map<Listenable, VoidCallback>>(
   ///       'handles',
   ///       handles,
   ///       description: handles != null ?
diff --git a/packages/flutter/lib/src/foundation/licenses.dart b/packages/flutter/lib/src/foundation/licenses.dart
index cbacdf4..316307c 100644
--- a/packages/flutter/lib/src/foundation/licenses.dart
+++ b/packages/flutter/lib/src/foundation/licenses.dart
@@ -70,7 +70,7 @@
 /// ```dart
 /// void initMyLibrary() {
 ///   LicenseRegistry.addLicense(() async* {
-///     yield new LicenseEntryWithLineBreaks(<String>['my_library'], '''
+///     yield LicenseEntryWithLineBreaks(<String>['my_library'], '''
 /// Copyright 2016 The Sample Authors. All rights reserved.
 ///
 /// Redistribution and use in source and binary forms, with or without
diff --git a/packages/flutter/lib/src/material/animated_icons/animated_icons.dart b/packages/flutter/lib/src/material/animated_icons/animated_icons.dart
index 6e3d27c..e86bacc 100644
--- a/packages/flutter/lib/src/material/animated_icons/animated_icons.dart
+++ b/packages/flutter/lib/src/material/animated_icons/animated_icons.dart
@@ -19,7 +19,7 @@
 /// ### Sample code
 ///
 /// ```dart
-/// new AnimatedIcon(
+/// AnimatedIcon(
 ///   icon: AnimatedIcons.menu_arrow,
 ///   progress: controller,
 ///   semanticLabel: 'Show menu',
diff --git a/packages/flutter/lib/src/material/app.dart b/packages/flutter/lib/src/material/app.dart
index b2eb132..cfcdc91 100644
--- a/packages/flutter/lib/src/material/app.dart
+++ b/packages/flutter/lib/src/material/app.dart
@@ -336,7 +336,7 @@
   ///   const FooLocalizationsDelegate();
   ///   @override
   ///   Future<FooLocalizations> load(Locale locale) {
-  ///     return new SynchronousFuture(new FooLocalizations(locale));
+  ///     return SynchronousFuture(FooLocalizations(locale));
   ///   }
   ///   @override
   ///   bool shouldReload(FooLocalizationsDelegate old) => false;
@@ -350,7 +350,7 @@
   /// [localizationsDelegates] list.
   ///
   /// ```dart
-  /// new MaterialApp(
+  /// MaterialApp(
   ///   localizationsDelegates: [
   ///     const FooLocalizationsDelegate(),
   ///   ],
diff --git a/packages/flutter/lib/src/material/app_bar.dart b/packages/flutter/lib/src/material/app_bar.dart
index c99af2c..89ef37b 100644
--- a/packages/flutter/lib/src/material/app_bar.dart
+++ b/packages/flutter/lib/src/material/app_bar.dart
@@ -91,21 +91,21 @@
 /// ## Sample code
 ///
 /// ```dart
-/// new AppBar(
-///   title: new Text('My Fancy Dress'),
+/// AppBar(
+///   title: Text('My Fancy Dress'),
 ///   actions: <Widget>[
-///     new IconButton(
-///       icon: new Icon(Icons.playlist_play),
+///     IconButton(
+///       icon: Icon(Icons.playlist_play),
 ///       tooltip: 'Air it',
 ///       onPressed: _airDress,
 ///     ),
-///     new IconButton(
-///       icon: new Icon(Icons.playlist_add),
+///     IconButton(
+///       icon: Icon(Icons.playlist_add),
 ///       tooltip: 'Restitch it',
 ///       onPressed: _restitchDress,
 ///     ),
-///     new IconButton(
-///       icon: new Icon(Icons.playlist_add_check),
+///     IconButton(
+///       icon: Icon(Icons.playlist_add_check),
 ///       tooltip: 'Repair it',
 ///       onPressed: _repairDress,
 ///     ),
@@ -191,12 +191,12 @@
   /// ## Sample code
   ///
   /// ```dart
-  /// new Scaffold(
-  ///   appBar: new AppBar(
-  ///     title: new Text('Hello World'),
+  /// Scaffold(
+  ///   appBar: AppBar(
+  ///     title: Text('Hello World'),
   ///     actions: <Widget>[
-  ///       new IconButton(
-  ///         icon: new Icon(Icons.shopping_cart),
+  ///       IconButton(
+  ///         icon: Icon(Icons.shopping_cart),
   ///         tooltip: 'Open shopping cart',
   ///         onPressed: () {
   ///           // ...
@@ -693,13 +693,13 @@
 /// [CustomScrollView.slivers] list:
 ///
 /// ```dart
-/// new SliverAppBar(
+/// SliverAppBar(
 ///   expandedHeight: 150.0,
 ///   flexibleSpace: const FlexibleSpaceBar(
 ///     title: Text('Available seats'),
 ///   ),
 ///   actions: <Widget>[
-///     new IconButton(
+///     IconButton(
 ///       icon: const Icon(Icons.add_circle),
 ///       tooltip: 'Add new entry',
 ///       onPressed: () { /* ... */ },
@@ -788,15 +788,15 @@
   /// ## Sample code
   ///
   /// ```dart
-  /// new Scaffold(
-  ///   body: new CustomScrollView(
+  /// Scaffold(
+  ///   body: CustomScrollView(
   ///     primary: true,
   ///     slivers: <Widget>[
-  ///       new SliverAppBar(
-  ///         title: new Text('Hello World'),
+  ///       SliverAppBar(
+  ///         title: Text('Hello World'),
   ///         actions: <Widget>[
-  ///           new IconButton(
-  ///             icon: new Icon(Icons.shopping_cart),
+  ///           IconButton(
+  ///             icon: Icon(Icons.shopping_cart),
   ///             tooltip: 'Open shopping cart',
   ///             onPressed: () {
   ///               // handle the press
diff --git a/packages/flutter/lib/src/material/bottom_app_bar.dart b/packages/flutter/lib/src/material/bottom_app_bar.dart
index f84f8af..cb8c91a 100644
--- a/packages/flutter/lib/src/material/bottom_app_bar.dart
+++ b/packages/flutter/lib/src/material/bottom_app_bar.dart
@@ -22,12 +22,12 @@
 /// ## Sample code
 ///
 /// ```dart
-/// new Scaffold(
-///   bottomNavigationBar: new BottomAppBar(
+/// Scaffold(
+///   bottomNavigationBar: BottomAppBar(
 ///     color: Colors.white,
 ///     child: bottomAppBarContents,
 ///   ),
-///   floatingActionButton: new FloatingActionButton(onPressed: null),
+///   floatingActionButton: FloatingActionButton(onPressed: null),
 /// )
 /// ```
 ///
diff --git a/packages/flutter/lib/src/material/button.dart b/packages/flutter/lib/src/material/button.dart
index 9a75ac1..712bea2 100644
--- a/packages/flutter/lib/src/material/button.dart
+++ b/packages/flutter/lib/src/material/button.dart
@@ -293,11 +293,11 @@
   /// Typically, a material design color will be used, as follows:
   ///
   /// ```dart
-  ///  new MaterialButton(
-  ///    color: Colors.blue[500],
-  ///    onPressed: _handleTap,
-  ///    child: new Text('DEMO'),
-  ///  ),
+  /// MaterialButton(
+  ///   color: Colors.blue[500],
+  ///   onPressed: _handleTap,
+  ///   child: Text('DEMO'),
+  /// ),
   /// ```
   final Color color;
 
diff --git a/packages/flutter/lib/src/material/button_theme.dart b/packages/flutter/lib/src/material/button_theme.dart
index 42a9247..6ae76f2 100644
--- a/packages/flutter/lib/src/material/button_theme.dart
+++ b/packages/flutter/lib/src/material/button_theme.dart
@@ -190,9 +190,9 @@
   /// Simply a convenience that returns [minWidth] and [height] as a
   /// [BoxConstraints] object:
   /// ```dart
-  /// return new BoxConstraints(
+  /// return BoxConstraints(
   ///   minWidth: minWidth,
-  ///    minHeight: height,
+  ///   minHeight: height,
   /// );
   /// ```
   BoxConstraints get constraints {
diff --git a/packages/flutter/lib/src/material/card.dart b/packages/flutter/lib/src/material/card.dart
index 688f6f0..cce955a 100644
--- a/packages/flutter/lib/src/material/card.dart
+++ b/packages/flutter/lib/src/material/card.dart
@@ -17,8 +17,8 @@
 /// Here is an example of using a [Card] widget.
 ///
 /// ```dart
-/// new Card(
-///   child: new Column(
+/// Card(
+///   child: Column(
 ///     mainAxisSize: MainAxisSize.min,
 ///     children: <Widget>[
 ///       const ListTile(
@@ -26,14 +26,14 @@
 ///         title: Text('The Enchanted Nightingale'),
 ///         subtitle: Text('Music by Julie Gable. Lyrics by Sidney Stein.'),
 ///       ),
-///       new ButtonTheme.bar( // make buttons use the appropriate styles for cards
-///         child: new ButtonBar(
+///       ButtonTheme.bar( // make buttons use the appropriate styles for cards
+///         child: ButtonBar(
 ///           children: <Widget>[
-///             new FlatButton(
+///             FlatButton(
 ///               child: const Text('BUY TICKETS'),
 ///               onPressed: () { /* ... */ },
 ///             ),
-///             new FlatButton(
+///             FlatButton(
 ///               child: const Text('LISTEN'),
 ///               onPressed: () { /* ... */ },
 ///             ),
diff --git a/packages/flutter/lib/src/material/checkbox.dart b/packages/flutter/lib/src/material/checkbox.dart
index 5c3fe5c..ca116ad 100644
--- a/packages/flutter/lib/src/material/checkbox.dart
+++ b/packages/flutter/lib/src/material/checkbox.dart
@@ -87,7 +87,7 @@
   /// gets rebuilt; for example:
   ///
   /// ```dart
-  /// new Checkbox(
+  /// Checkbox(
   ///   value: _throwShotAway,
   ///   onChanged: (bool newValue) {
   ///     setState(() {
diff --git a/packages/flutter/lib/src/material/checkbox_list_tile.dart b/packages/flutter/lib/src/material/checkbox_list_tile.dart
index 9c1c9fe..fdb6ae5 100644
--- a/packages/flutter/lib/src/material/checkbox_list_tile.dart
+++ b/packages/flutter/lib/src/material/checkbox_list_tile.dart
@@ -40,7 +40,7 @@
 /// (including the animation of the checkbox itself getting checked!).
 ///
 /// ```dart
-/// new CheckboxListTile(
+/// CheckboxListTile(
 ///   title: const Text('Animate Slowly'),
 ///   value: timeDilation != 1.0,
 ///   onChanged: (bool value) {
@@ -113,14 +113,14 @@
   /// gets rebuilt; for example:
   ///
   /// ```dart
-  /// new CheckboxListTile(
+  /// CheckboxListTile(
   ///   value: _throwShotAway,
   ///   onChanged: (bool newValue) {
   ///     setState(() {
   ///       _throwShotAway = newValue;
   ///     });
   ///   },
-  ///   title: new Text('Throw away your shot'),
+  ///   title: Text('Throw away your shot'),
   /// )
   /// ```
   final ValueChanged<bool> onChanged;
diff --git a/packages/flutter/lib/src/material/chip.dart b/packages/flutter/lib/src/material/chip.dart
index f23d2f9..741cca2 100644
--- a/packages/flutter/lib/src/material/chip.dart
+++ b/packages/flutter/lib/src/material/chip.dart
@@ -156,7 +156,7 @@
   ///
   /// class CastList extends StatefulWidget {
   ///   @override
-  ///   State createState() => new CastListState();
+  ///   State createState() => CastListState();
   /// }
   ///
   /// class CastListState extends State<CastList> {
@@ -169,11 +169,11 @@
   ///
   ///   Iterable<Widget> get actorWidgets sync* {
   ///     for (Actor actor in _cast) {
-  ///       yield new Padding(
+  ///       yield Padding(
   ///         padding: const EdgeInsets.all(4.0),
-  ///         child: new Chip(
-  ///           avatar: new CircleAvatar(child: new Text(actor.initials)),
-  ///           label: new Text(actor.name),
+  ///         child: Chip(
+  ///           avatar: CircleAvatar(child: Text(actor.initials)),
+  ///           label: Text(actor.name),
   ///           onDeleted: () {
   ///             setState(() {
   ///               _cast.removeWhere((Actor entry) {
@@ -188,7 +188,7 @@
   ///
   ///   @override
   ///   Widget build(BuildContext context) {
-  ///     return new Wrap(
+  ///     return Wrap(
   ///       children: actorWidgets.toList(),
   ///     );
   ///   }
@@ -253,7 +253,7 @@
   /// ```dart
   /// class Wood extends StatefulWidget {
   ///   @override
-  ///   State<StatefulWidget> createState() => new WoodState();
+  ///   State<StatefulWidget> createState() => WoodState();
   /// }
   ///
   /// class WoodState extends State<Wood> {
@@ -261,7 +261,7 @@
   ///
   ///   @override
   ///   Widget build(BuildContext context) {
-  ///     return new InputChip(
+  ///     return InputChip(
   ///       label: const Text('Use Chisel'),
   ///       selected: _useChisel,
   ///       onSelected: (bool newValue) {
@@ -369,7 +369,7 @@
   ///
   ///   @override
   ///   Widget build(BuildContext context) {
-  ///     return new InputChip(
+  ///     return InputChip(
   ///       label: const Text('Apply Hammer'),
   ///       onPressed: startHammering,
   ///     );
@@ -397,12 +397,12 @@
 /// ## Sample code
 ///
 /// ```dart
-/// new Chip(
-///   avatar: new CircleAvatar(
+/// Chip(
+///   avatar: CircleAvatar(
 ///     backgroundColor: Colors.grey.shade800,
-///     child: new Text('AB'),
+///     child: Text('AB'),
 ///   ),
-///   label: new Text('Aaron Burr'),
+///   label: Text('Aaron Burr'),
 /// )
 /// ```
 ///
@@ -513,12 +513,12 @@
 /// ## Sample code
 ///
 /// ```dart
-/// new InputChip(
-///   avatar: new CircleAvatar(
+/// InputChip(
+///   avatar: CircleAvatar(
 ///     backgroundColor: Colors.grey.shade800,
-///     child: new Text('AB'),
+///     child: Text('AB'),
 ///   ),
-///   label: new Text('Aaron Burr'),
+///   label: Text('Aaron Burr'),
 ///   onPressed: () {
 ///     print('I am the one thing in life.');
 ///   }
@@ -661,7 +661,7 @@
 /// ```dart
 /// class MyThreeOptions extends StatefulWidget {
 ///   @override
-///   _MyThreeOptionsState createState() => new _MyThreeOptionsState();
+///   _MyThreeOptionsState createState() => _MyThreeOptionsState();
 /// }
 ///
 /// class _MyThreeOptionsState extends State<MyThreeOptions> {
@@ -669,12 +669,12 @@
 ///
 ///   @override
 ///   Widget build(BuildContext context) {
-///     return new Wrap(
-///       children: new List<Widget>.generate(
+///     return Wrap(
+///       children: List<Widget>.generate(
 ///         3,
 ///         (int index) {
-///           return new ChoiceChip(
-///             label: new Text('Item $index'),
+///           return ChoiceChip(
+///             label: Text('Item $index'),
 ///             selected: _value == index,
 ///             onSelected: (bool selected) {
 ///               _value = selected ? index : null;
@@ -807,7 +807,7 @@
 ///
 /// class CastFilter extends StatefulWidget {
 ///   @override
-///   State createState() => new CastFilterState();
+///   State createState() => CastFilterState();
 /// }
 ///
 /// class CastFilterState extends State<CastFilter> {
@@ -821,11 +821,11 @@
 ///
 ///   Iterable<Widget> get actorWidgets sync* {
 ///     for (ActorFilterEntry actor in _cast) {
-///       yield new Padding(
+///       yield Padding(
 ///         padding: const EdgeInsets.all(4.0),
-///         child: new FilterChip(
-///           avatar: new CircleAvatar(child: new Text(actor.initials)),
-///           label: new Text(actor.name),
+///         child: FilterChip(
+///           avatar: CircleAvatar(child: Text(actor.initials)),
+///           label: Text(actor.name),
 ///           selected: _filters.contains(actor.name),
 ///           onSelected: (bool value) {
 ///             setState(() {
@@ -848,10 +848,10 @@
 ///     return Column(
 ///       mainAxisAlignment: MainAxisAlignment.center,
 ///       children: <Widget>[
-///         new Wrap(
+///         Wrap(
 ///           children: actorWidgets.toList(),
 ///         ),
-///         new Text('Look for: ${_filters.join(', ')}'),
+///         Text('Look for: ${_filters.join(', ')}'),
 ///       ],
 ///     );
 ///   }
@@ -977,12 +977,12 @@
 /// ## Sample code
 ///
 /// ```dart
-/// new ActionChip(
-///   avatar: new CircleAvatar(
+/// ActionChip(
+///   avatar: CircleAvatar(
 ///     backgroundColor: Colors.grey.shade800,
-///     child: new Text('AB'),
+///     child: Text('AB'),
 ///   ),
-///   label: new Text('Aaron Burr'),
+///   label: Text('Aaron Burr'),
 ///   onPressed: () {
 ///     print("If you stand for nothing, Burr, what’ll you fall for?");
 ///   }
diff --git a/packages/flutter/lib/src/material/chip_theme.dart b/packages/flutter/lib/src/material/chip_theme.dart
index 445486a..1eb8558 100644
--- a/packages/flutter/lib/src/material/chip_theme.dart
+++ b/packages/flutter/lib/src/material/chip_theme.dart
@@ -66,9 +66,9 @@
   /// class Spaceship extends StatelessWidget {
   ///   @override
   ///   Widget build(BuildContext context) {
-  ///     return new ChipTheme(
+  ///     return ChipTheme(
   ///       data: ChipTheme.of(context).copyWith(backgroundColor: Colors.red),
-  ///       child: new ActionChip(
+  ///       child: ActionChip(
   ///         label: const Text('Launch'),
   ///         onPressed: () { print('We have liftoff!'); },
   ///       ),
@@ -116,7 +116,7 @@
 /// ```dart
 /// class CarColor extends StatefulWidget {
 ///   @override
-///   State createState() => new _CarColorState();
+///   State createState() => _CarColorState();
 /// }
 ///
 /// class _CarColorState extends State<CarColor> {
@@ -124,10 +124,10 @@
 ///
 ///   @override
 ///   Widget build(BuildContext context) {
-///     return new ChipTheme(
+///     return ChipTheme(
 ///       data: ChipTheme.of(context).copyWith(backgroundColor: Colors.lightBlue),
-///       child: new ChoiceChip(
-///         label: new Text('Light Blue'),
+///       child: ChoiceChip(
+///         label: Text('Light Blue'),
 ///         onSelected: (bool value) {
 ///           setState(() {
 ///             _color = value ? Colors.lightBlue : Colors.red;
diff --git a/packages/flutter/lib/src/material/circle_avatar.dart b/packages/flutter/lib/src/material/circle_avatar.dart
index 7a9ba00..5d90762 100644
--- a/packages/flutter/lib/src/material/circle_avatar.dart
+++ b/packages/flutter/lib/src/material/circle_avatar.dart
@@ -23,8 +23,8 @@
 /// [backgroundImage] property:
 ///
 /// ```dart
-/// new CircleAvatar(
-///   backgroundImage: new NetworkImage(userAvatarUrl),
+/// CircleAvatar(
+///   backgroundImage: NetworkImage(userAvatarUrl),
 /// )
 /// ```
 ///
@@ -34,9 +34,9 @@
 /// provided using a [Text] widget as the [child] and a [backgroundColor]:
 ///
 /// ```dart
-/// new CircleAvatar(
+/// CircleAvatar(
 ///   backgroundColor: Colors.brown.shade800,
-///   child: new Text('AH'),
+///   child: Text('AH'),
 /// )
 /// ```
 ///
diff --git a/packages/flutter/lib/src/material/colors.dart b/packages/flutter/lib/src/material/colors.dart
index dcf3909..5bd7af1 100644
--- a/packages/flutter/lib/src/material/colors.dart
+++ b/packages/flutter/lib/src/material/colors.dart
@@ -116,7 +116,7 @@
 /// Each [ColorSwatch] constant is a color and can used directly. For example:
 ///
 /// ```dart
-/// new Container(
+/// Container(
 ///   color: Colors.blue, // same as Colors.blue[500] or Colors.blue.shade500
 /// )
 /// ```
@@ -398,7 +398,7 @@
   /// ## Sample code
   ///
   /// ```dart
-  /// new Icon(
+  /// Icon(
   ///   Icons.widgets,
   ///   color: Colors.red[400],
   /// )
@@ -441,7 +441,7 @@
   /// ## Sample code
   ///
   /// ```dart
-  /// new Icon(
+  /// Icon(
   ///   Icons.widgets,
   ///   color: Colors.redAccent[400],
   /// )
@@ -478,7 +478,7 @@
   /// ## Sample code
   ///
   /// ```dart
-  /// new Icon(
+  /// Icon(
   ///   Icons.widgets,
   ///   color: Colors.pink[400],
   /// )
@@ -521,7 +521,7 @@
   /// ## Sample code
   ///
   /// ```dart
-  /// new Icon(
+  /// Icon(
   ///   Icons.widgets,
   ///   color: Colors.pinkAccent[400],
   /// )
@@ -558,7 +558,7 @@
   /// ## Sample code
   ///
   /// ```dart
-  /// new Icon(
+  /// Icon(
   ///   Icons.widgets,
   ///   color: Colors.purple[400],
   /// )
@@ -601,7 +601,7 @@
   /// ## Sample code
   ///
   /// ```dart
-  /// new Icon(
+  /// Icon(
   ///   Icons.widgets,
   ///   color: Colors.purpleAccent[400],
   /// )
@@ -638,7 +638,7 @@
   /// ## Sample code
   ///
   /// ```dart
-  /// new Icon(
+  /// Icon(
   ///   Icons.widgets,
   ///   color: Colors.deepPurple[400],
   /// )
@@ -681,7 +681,7 @@
   /// ## Sample code
   ///
   /// ```dart
-  /// new Icon(
+  /// Icon(
   ///   Icons.widgets,
   ///   color: Colors.deepPurpleAccent[400],
   /// )
@@ -718,7 +718,7 @@
   /// ## Sample code
   ///
   /// ```dart
-  /// new Icon(
+  /// Icon(
   ///   Icons.widgets,
   ///   color: Colors.indigo[400],
   /// )
@@ -761,7 +761,7 @@
   /// ## Sample code
   ///
   /// ```dart
-  /// new Icon(
+  /// Icon(
   ///   Icons.widgets,
   ///   color: Colors.indigoAccent[400],
   /// )
@@ -800,7 +800,7 @@
   /// ## Sample code
   ///
   /// ```dart
-  /// new Icon(
+  /// Icon(
   ///   Icons.widgets,
   ///   color: Colors.blue[400],
   /// )
@@ -843,7 +843,7 @@
   /// ## Sample code
   ///
   /// ```dart
-  /// new Icon(
+  /// Icon(
   ///   Icons.widgets,
   ///   color: Colors.blueAccent[400],
   /// )
@@ -880,7 +880,7 @@
   /// ## Sample code
   ///
   /// ```dart
-  /// new Icon(
+  /// Icon(
   ///   Icons.widgets,
   ///   color: Colors.lightBlue[400],
   /// )
@@ -923,7 +923,7 @@
   /// ## Sample code
   ///
   /// ```dart
-  /// new Icon(
+  /// Icon(
   ///   Icons.widgets,
   ///   color: Colors.lightBlueAccent[400],
   /// )
@@ -962,7 +962,7 @@
   /// ## Sample code
   ///
   /// ```dart
-  /// new Icon(
+  /// Icon(
   ///   Icons.widgets,
   ///   color: Colors.cyan[400],
   /// )
@@ -1005,7 +1005,7 @@
   /// ## Sample code
   ///
   /// ```dart
-  /// new Icon(
+  /// Icon(
   ///   Icons.widgets,
   ///   color: Colors.cyanAccent[400],
   /// )
@@ -1042,7 +1042,7 @@
   /// ## Sample code
   ///
   /// ```dart
-  /// new Icon(
+  /// Icon(
   ///   Icons.widgets,
   ///   color: Colors.teal[400],
   /// )
@@ -1085,7 +1085,7 @@
   /// ## Sample code
   ///
   /// ```dart
-  /// new Icon(
+  /// Icon(
   ///   Icons.widgets,
   ///   color: Colors.tealAccent[400],
   /// )
@@ -1125,7 +1125,7 @@
   /// ## Sample code
   ///
   /// ```dart
-  /// new Icon(
+  /// Icon(
   ///   Icons.widgets,
   ///   color: Colors.green[400],
   /// )
@@ -1171,7 +1171,7 @@
   /// ## Sample code
   ///
   /// ```dart
-  /// new Icon(
+  /// Icon(
   ///   Icons.widgets,
   ///   color: Colors.greenAccent[400],
   /// )
@@ -1208,7 +1208,7 @@
   /// ## Sample code
   ///
   /// ```dart
-  /// new Icon(
+  /// Icon(
   ///   Icons.widgets,
   ///   color: Colors.lightGreen[400],
   /// )
@@ -1251,7 +1251,7 @@
   /// ## Sample code
   ///
   /// ```dart
-  /// new Icon(
+  /// Icon(
   ///   Icons.widgets,
   ///   color: Colors.lightGreenAccent[400],
   /// )
@@ -1288,7 +1288,7 @@
   /// ## Sample code
   ///
   /// ```dart
-  /// new Icon(
+  /// Icon(
   ///   Icons.widgets,
   ///   color: Colors.lime[400],
   /// )
@@ -1331,7 +1331,7 @@
   /// ## Sample code
   ///
   /// ```dart
-  /// new Icon(
+  /// Icon(
   ///   Icons.widgets,
   ///   color: Colors.limeAccent[400],
   /// )
@@ -1368,7 +1368,7 @@
   /// ## Sample code
   ///
   /// ```dart
-  /// new Icon(
+  /// Icon(
   ///   Icons.widgets,
   ///   color: Colors.yellow[400],
   /// )
@@ -1411,7 +1411,7 @@
   /// ## Sample code
   ///
   /// ```dart
-  /// new Icon(
+  /// Icon(
   ///   Icons.widgets,
   ///   color: Colors.yellowAccent[400],
   /// )
@@ -1448,7 +1448,7 @@
   /// ## Sample code
   ///
   /// ```dart
-  /// new Icon(
+  /// Icon(
   ///   Icons.widgets,
   ///   color: Colors.amber[400],
   /// )
@@ -1491,7 +1491,7 @@
   /// ## Sample code
   ///
   /// ```dart
-  /// new Icon(
+  /// Icon(
   ///   Icons.widgets,
   ///   color: Colors.amberAccent[400],
   /// )
@@ -1530,7 +1530,7 @@
   /// ## Sample code
   ///
   /// ```dart
-  /// new Icon(
+  /// Icon(
   ///   Icons.widgets,
   ///   color: Colors.orange[400],
   /// )
@@ -1573,7 +1573,7 @@
   /// ## Sample code
   ///
   /// ```dart
-  /// new Icon(
+  /// Icon(
   ///   Icons.widgets,
   ///   color: Colors.orangeAccent[400],
   /// )
@@ -1612,7 +1612,7 @@
   /// ## Sample code
   ///
   /// ```dart
-  /// new Icon(
+  /// Icon(
   ///   Icons.widgets,
   ///   color: Colors.deepOrange[400],
   /// )
@@ -1655,7 +1655,7 @@
   /// ## Sample code
   ///
   /// ```dart
-  /// new Icon(
+  /// Icon(
   ///   Icons.widgets,
   ///   color: Colors.deepOrangeAccent[400],
   /// )
@@ -1691,7 +1691,7 @@
   /// ## Sample code
   ///
   /// ```dart
-  /// new Icon(
+  /// Icon(
   ///   Icons.widgets,
   ///   color: Colors.brown[400],
   /// )
@@ -1737,7 +1737,7 @@
   /// ## Sample code
   ///
   /// ```dart
-  /// new Icon(
+  /// Icon(
   ///   Icons.widgets,
   ///   color: Colors.grey[400],
   /// )
@@ -1784,7 +1784,7 @@
   /// ## Sample code
   ///
   /// ```dart
-  /// new Icon(
+  /// Icon(
   ///   Icons.widgets,
   ///   color: Colors.blueGrey[400],
   /// )
diff --git a/packages/flutter/lib/src/material/dialog.dart b/packages/flutter/lib/src/material/dialog.dart
index 9c93960..de2dc55 100644
--- a/packages/flutter/lib/src/material/dialog.dart
+++ b/packages/flutter/lib/src/material/dialog.dart
@@ -121,19 +121,19 @@
 ///     context: context,
 ///     barrierDismissible: false, // user must tap button!
 ///     builder: (BuildContext context) {
-///       return new AlertDialog(
-///         title: new Text('Rewind and remember'),
-///         content: new SingleChildScrollView(
-///           child: new ListBody(
+///       return AlertDialog(
+///         title: Text('Rewind and remember'),
+///         content: SingleChildScrollView(
+///           child: ListBody(
 ///             children: <Widget>[
-///               new Text('You will never be satisfied.'),
-///               new Text('You\’re like me. I’m never satisfied.'),
+///               Text('You will never be satisfied.'),
+///               Text('You\’re like me. I’m never satisfied.'),
 ///             ],
 ///           ),
 ///         ),
 ///         actions: <Widget>[
-///           new FlatButton(
-///             child: new Text('Regret'),
+///           FlatButton(
+///             child: Text('Regret'),
 ///             onPressed: () {
 ///               Navigator.of(context).pop();
 ///             },
@@ -309,7 +309,7 @@
 /// ## Sample code
 ///
 /// ```dart
-/// new SimpleDialogOption(
+/// SimpleDialogOption(
 ///   onPressed: () { Navigator.pop(context, Department.treasury); },
 ///   child: const Text('Treasury department'),
 /// )
@@ -388,14 +388,14 @@
 ///   switch (await showDialog<Department>(
 ///     context: context,
 ///     builder: (BuildContext context) {
-///       return new SimpleDialog(
+///       return SimpleDialog(
 ///         title: const Text('Select assignment'),
 ///         children: <Widget>[
-///           new SimpleDialogOption(
+///           SimpleDialogOption(
 ///             onPressed: () { Navigator.pop(context, Department.treasury); },
 ///             child: const Text('Treasury department'),
 ///           ),
-///           new SimpleDialogOption(
+///           SimpleDialogOption(
 ///             onPressed: () { Navigator.pop(context, Department.state); },
 ///             child: const Text('State department'),
 ///           ),
diff --git a/packages/flutter/lib/src/material/divider.dart b/packages/flutter/lib/src/material/divider.dart
index f6ddaa6..05dda8d 100644
--- a/packages/flutter/lib/src/material/divider.dart
+++ b/packages/flutter/lib/src/material/divider.dart
@@ -55,7 +55,7 @@
   /// ## Sample code
   ///
   /// ```dart
-  /// new Divider(
+  /// Divider(
   ///   color: Colors.deepOrange,
   /// )
   /// ```
@@ -75,9 +75,9 @@
   /// scrollable section from the rest of the interface.
   ///
   /// ```dart
-  /// new DecoratedBox(
-  ///   decoration: new BoxDecoration(
-  ///     border: new Border(
+  /// DecoratedBox(
+  ///   decoration: BoxDecoration(
+  ///     border: Border(
   ///       top: Divider.createBorderSide(context),
   ///       bottom: Divider.createBorderSide(context),
   ///     ),
diff --git a/packages/flutter/lib/src/material/drawer.dart b/packages/flutter/lib/src/material/drawer.dart
index 4849cbd..4263711 100644
--- a/packages/flutter/lib/src/material/drawer.dart
+++ b/packages/flutter/lib/src/material/drawer.dart
@@ -56,9 +56,9 @@
 /// a drawer item might close the drawer when tapped:
 ///
 /// ```dart
-/// new ListTile(
-///   leading: new Icon(Icons.change_history),
-///   title: new Text('Change history'),
+/// ListTile(
+///   leading: Icon(Icons.change_history),
+///   title: Text('Change history'),
 ///   onTap: () {
 ///     // change app state...
 ///     Navigator.pop(context); // close the drawer
diff --git a/packages/flutter/lib/src/material/feedback.dart b/packages/flutter/lib/src/material/feedback.dart
index d7dc105..eeca730 100644
--- a/packages/flutter/lib/src/material/feedback.dart
+++ b/packages/flutter/lib/src/material/feedback.dart
@@ -36,7 +36,7 @@
 /// class WidgetWithWrappedHandler extends StatelessWidget {
 ///   @override
 ///   Widget build(BuildContext context) {
-///     return new GestureDetector(
+///     return GestureDetector(
 ///       onTap: Feedback.wrapForTap(_onTapHandler, context),
 ///       onLongPress: Feedback.wrapForLongPress(_onLongPressHandler, context),
 ///       child: const Text('X'),
@@ -60,7 +60,7 @@
 /// class WidgetWithExplicitCall extends StatelessWidget {
 ///   @override
 ///   Widget build(BuildContext context) {
-///     return new GestureDetector(
+///     return GestureDetector(
 ///       onTap: () {
 ///         // Do some work (e.g. check if the tap is valid)
 ///         Feedback.forTap(context);
diff --git a/packages/flutter/lib/src/material/floating_action_button_location.dart b/packages/flutter/lib/src/material/floating_action_button_location.dart
index 8dfbc15..64a32ec 100644
--- a/packages/flutter/lib/src/material/floating_action_button_location.dart
+++ b/packages/flutter/lib/src/material/floating_action_button_location.dart
@@ -270,7 +270,7 @@
   ///   @override
   ///   Animation<double> getScaleAnimation({@required Animation<double> parent}) {
   ///     // The animations will cross at value 0, and the train will return to 1.0.
-  ///     return new TrainHoppingAnimation(
+  ///     return TrainHoppingAnimation(
   ///       Tween<double>(begin: 1.0, end: -1.0).animate(parent),
   ///       Tween<double>(begin: -1.0, end: 1.0).animate(parent),
   ///     );
@@ -289,10 +289,10 @@
   /// [FloatingActionButton] through a full circle:
   ///
   /// ```dart
-  ///   @override
-  ///   Animation<double> getRotationAnimation({@required Animation<double> parent}) {
-  ///     return new Tween<double>(begin: 0.0, end: 1.0).animate(parent);
-  ///   }
+  /// @override
+  /// Animation<double> getRotationAnimation({@required Animation<double> parent}) {
+  ///   return Tween<double>(begin: 0.0, end: 1.0).animate(parent);
+  /// }
   /// ```
   Animation<double> getRotationAnimation({@required Animation<double> parent});
 
diff --git a/packages/flutter/lib/src/material/icon_button.dart b/packages/flutter/lib/src/material/icon_button.dart
index 3278256..912dc83 100644
--- a/packages/flutter/lib/src/material/icon_button.dart
+++ b/packages/flutter/lib/src/material/icon_button.dart
@@ -40,8 +40,8 @@
 /// ## Sample code
 ///
 /// ```dart
-/// new IconButton(
-///   icon: new Icon(Icons.volume_up),
+/// IconButton(
+///   icon: Icon(Icons.volume_up),
 ///   tooltip: 'Increase volume by 10%',
 ///   onPressed: () { setState(() { _volume *= 1.1; }); },
 /// )
@@ -137,11 +137,11 @@
   /// See also [disabledColor].
   ///
   /// ```dart
-  ///  new IconButton(
-  ///    color: Colors.blue,
-  ///    onPressed: _handleTap,
-  ///    icon: Icons.widgets,
-  ///  ),
+  /// IconButton(
+  ///   color: Colors.blue,
+  ///   onPressed: _handleTap,
+  ///   icon: Icons.widgets,
+  /// ),
   /// ```
   final Color color;
 
diff --git a/packages/flutter/lib/src/material/ink_decoration.dart b/packages/flutter/lib/src/material/ink_decoration.dart
index f58b1b9..d204903 100644
--- a/packages/flutter/lib/src/material/ink_decoration.dart
+++ b/packages/flutter/lib/src/material/ink_decoration.dart
@@ -50,17 +50,17 @@
 /// on it using [Ink], while still having ink effects over the yellow rectangle:
 ///
 /// ```dart
-/// new Material(
+/// Material(
 ///   color: Colors.teal[900],
-///   child: new Center(
-///     child: new Ink(
+///   child: Center(
+///     child: Ink(
 ///       color: Colors.yellow,
 ///       width: 200.0,
 ///       height: 100.0,
-///       child: new InkWell(
+///       child: InkWell(
 ///         onTap: () { /* ... */ },
-///         child: new Center(
-///           child: new Text('YELLOW'),
+///         child: Center(
+///           child: Text('YELLOW'),
 ///         )
 ///       ),
 ///     ),
@@ -72,21 +72,21 @@
 /// widget with an [InkWell] above it:
 ///
 /// ```dart
-/// new Material(
+/// Material(
 ///   color: Colors.grey[800],
-///   child: new Center(
-///     child: new Ink.image(
-///       image: new AssetImage('cat.jpeg'),
+///   child: Center(
+///     child: Ink.image(
+///       image: AssetImage('cat.jpeg'),
 ///       fit: BoxFit.cover,
 ///       width: 300.0,
 ///       height: 200.0,
-///       child: new InkWell(
+///       child: InkWell(
 ///         onTap: () { /* ... */ },
-///         child: new Align(
+///         child: Align(
 ///           alignment: Alignment.topLeft,
-///           child: new Padding(
+///           child: Padding(
 ///             padding: const EdgeInsets.all(10.0),
-///             child: new Text('KITTEN', style: new TextStyle(fontWeight: FontWeight.w900, color: Colors.white)),
+///             child: Text('KITTEN', style: TextStyle(fontWeight: FontWeight.w900, color: Colors.white)),
 ///           ),
 ///         )
 ///       ),
diff --git a/packages/flutter/lib/src/material/input_decorator.dart b/packages/flutter/lib/src/material/input_decorator.dart
index 98d3e30..ec1aba3 100644
--- a/packages/flutter/lib/src/material/input_decorator.dart
+++ b/packages/flutter/lib/src/material/input_decorator.dart
@@ -2119,7 +2119,7 @@
   /// To pad the leading edge of the prefix icon:
   ///
   /// ```dart
-  /// prefixIcon: new Padding(
+  /// prefixIcon: Padding(
   ///   padding: const EdgeInsetsDirectional.only(start: 12.0),
   ///   child: myIcon, // icon is 48px widget.
   /// )
@@ -2166,7 +2166,7 @@
   /// To pad the trailing edge of the suffix icon:
   ///
   /// ```dart
-  /// suffixIcon: new Padding(
+  /// suffixIcon: Padding(
   ///   padding: const EdgeInsetsDirectional.only(end: 12.0),
   ///   child: myIcon, // icon is 48px widget.
   /// )
diff --git a/packages/flutter/lib/src/material/list_tile.dart b/packages/flutter/lib/src/material/list_tile.dart
index 8fa7828..9c817c8 100644
--- a/packages/flutter/lib/src/material/list_tile.dart
+++ b/packages/flutter/lib/src/material/list_tile.dart
@@ -175,7 +175,7 @@
 /// Here is a simple tile with an icon and some text.
 ///
 /// ```dart
-/// new ListTile(
+/// ListTile(
 ///   leading: const Icon(Icons.event_seat),
 ///   title: const Text('The seat for the narrator'),
 /// )
@@ -188,7 +188,7 @@
 /// ```dart
 /// int _act = 1;
 /// // ...
-/// new ListTile(
+/// ListTile(
 ///   leading: const Icon(Icons.flight_land),
 ///   title: const Text('Trix\'s airplane'),
 ///   subtitle: _act != 2 ? const Text('The airplane is only in Act II.') : null,
diff --git a/packages/flutter/lib/src/material/popup_menu.dart b/packages/flutter/lib/src/material/popup_menu.dart
index ac54202..e58dbe5 100644
--- a/packages/flutter/lib/src/material/popup_menu.dart
+++ b/packages/flutter/lib/src/material/popup_menu.dart
@@ -291,7 +291,7 @@
 /// shows a divider placed between the two menu items.)
 ///
 /// ```dart
-/// new PopupMenuButton<Commands>(
+/// PopupMenuButton<Commands>(
 ///   onSelected: (Commands result) {
 ///     switch (result) {
 ///       case Commands.heroAndScholar:
@@ -304,7 +304,7 @@
 ///     }
 ///   },
 ///   itemBuilder: (BuildContext context) => <PopupMenuEntry<Commands>>[
-///     new CheckedPopupMenuItem<Commands>(
+///     CheckedPopupMenuItem<Commands>(
 ///       checked: _heroAndScholar,
 ///       value: Commands.heroAndScholar,
 ///       child: const Text('Hero and scholar'),
@@ -774,7 +774,7 @@
 ///
 /// // This menu button widget updates a _selection field (of type WhyFarther,
 /// // not shown here).
-/// new PopupMenuButton<WhyFarther>(
+/// PopupMenuButton<WhyFarther>(
 ///   onSelected: (WhyFarther result) { setState(() { _selection = result; }); },
 ///   itemBuilder: (BuildContext context) => <PopupMenuEntry<WhyFarther>>[
 ///     const PopupMenuItem<WhyFarther>(
diff --git a/packages/flutter/lib/src/material/radio.dart b/packages/flutter/lib/src/material/radio.dart
index ec13e4b..a492f82 100644
--- a/packages/flutter/lib/src/material/radio.dart
+++ b/packages/flutter/lib/src/material/radio.dart
@@ -81,7 +81,7 @@
   /// gets rebuilt; for example:
   ///
   /// ```dart
-  /// new Radio<SingingCharacter>(
+  /// Radio<SingingCharacter>(
   ///   value: SingingCharacter.lafayette,
   ///   groupValue: _character,
   ///   onChanged: (SingingCharacter newValue) {
diff --git a/packages/flutter/lib/src/material/radio_list_tile.dart b/packages/flutter/lib/src/material/radio_list_tile.dart
index 698e46f..2fee40c 100644
--- a/packages/flutter/lib/src/material/radio_list_tile.dart
+++ b/packages/flutter/lib/src/material/radio_list_tile.dart
@@ -50,15 +50,15 @@
 /// SingingCharacter _character = SingingCharacter.lafayette;
 ///
 /// // In the build function of that State:
-/// new Column(
+/// Column(
 ///   children: <Widget>[
-///     new RadioListTile<SingingCharacter>(
+///     RadioListTile<SingingCharacter>(
 ///       title: const Text('Lafayette'),
 ///       value: SingingCharacter.lafayette,
 ///       groupValue: _character,
 ///       onChanged: (SingingCharacter value) { setState(() { _character = value; }); },
 ///     ),
-///     new RadioListTile<SingingCharacter>(
+///     RadioListTile<SingingCharacter>(
 ///       title: const Text('Thomas Jefferson'),
 ///       value: SingingCharacter.jefferson,
 ///       groupValue: _character,
@@ -130,7 +130,7 @@
   /// gets rebuilt; for example:
   ///
   /// ```dart
-  /// new RadioListTile<SingingCharacter>(
+  /// RadioListTile<SingingCharacter>(
   ///   title: const Text('Lafayette'),
   ///   value: SingingCharacter.lafayette,
   ///   groupValue: _character,
diff --git a/packages/flutter/lib/src/material/raised_button.dart b/packages/flutter/lib/src/material/raised_button.dart
index 7b06c05..553dcf8 100644
--- a/packages/flutter/lib/src/material/raised_button.dart
+++ b/packages/flutter/lib/src/material/raised_button.dart
@@ -170,10 +170,10 @@
   /// for example:
   ///
   /// ```dart
-  ///  new RaisedButton(
+  ///  RaisedButton(
   ///    color: Colors.blue,
   ///    onPressed: _handleTap,
-  ///    child: new Text('DEMO'),
+  ///    child: Text('DEMO'),
   ///  ),
   /// ```
   ///
diff --git a/packages/flutter/lib/src/material/refresh_indicator.dart b/packages/flutter/lib/src/material/refresh_indicator.dart
index eb3dbbf..2a9608e 100644
--- a/packages/flutter/lib/src/material/refresh_indicator.dart
+++ b/packages/flutter/lib/src/material/refresh_indicator.dart
@@ -58,7 +58,7 @@
 /// settings its `physics` property to [AlwaysScrollableScrollPhysics]:
 ///
 /// ```dart
-/// new ListView(
+/// ListView(
 ///   physics: const AlwaysScrollableScrollPhysics(),
 ///   children: ...
 //  )
diff --git a/packages/flutter/lib/src/material/scaffold.dart b/packages/flutter/lib/src/material/scaffold.dart
index 8cffb0b..c3d16f8 100644
--- a/packages/flutter/lib/src/material/scaffold.dart
+++ b/packages/flutter/lib/src/material/scaffold.dart
@@ -850,11 +850,11 @@
   /// ```dart
   /// @override
   /// Widget build(BuildContext context) {
-  ///   return new RaisedButton(
-  ///     child: new Text('SHOW A SNACKBAR'),
+  ///   return RaisedButton(
+  ///     child: Text('SHOW A SNACKBAR'),
   ///     onPressed: () {
-  ///       Scaffold.of(context).showSnackBar(new SnackBar(
-  ///         content: new Text('Hello!'),
+  ///       Scaffold.of(context).showSnackBar(SnackBar(
+  ///         content: Text('Hello!'),
   ///       ));
   ///     },
   ///   );
@@ -870,20 +870,20 @@
   /// ```dart
   /// @override
   /// Widget build(BuildContext context) {
-  ///   return new Scaffold(
-  ///     appBar: new AppBar(
-  ///       title: new Text('Demo')
+  ///   return Scaffold(
+  ///     appBar: AppBar(
+  ///       title: Text('Demo')
   ///     ),
-  ///     body: new Builder(
+  ///     body: Builder(
   ///       // Create an inner BuildContext so that the onPressed methods
   ///       // can refer to the Scaffold with Scaffold.of().
   ///       builder: (BuildContext context) {
-  ///         return new Center(
-  ///           child: new RaisedButton(
-  ///             child: new Text('SHOW A SNACKBAR'),
+  ///         return Center(
+  ///           child: RaisedButton(
+  ///             child: Text('SHOW A SNACKBAR'),
   ///             onPressed: () {
-  ///               Scaffold.of(context).showSnackBar(new SnackBar(
-  ///                 content: new Text('Hello!'),
+  ///               Scaffold.of(context).showSnackBar(SnackBar(
+  ///                 content: Text('Hello!'),
   ///               ));
   ///             },
   ///           ),
diff --git a/packages/flutter/lib/src/material/slider.dart b/packages/flutter/lib/src/material/slider.dart
index 4ace398..a0fecac 100644
--- a/packages/flutter/lib/src/material/slider.dart
+++ b/packages/flutter/lib/src/material/slider.dart
@@ -148,7 +148,7 @@
   /// ## Sample code
   ///
   /// ```dart
-  /// new Slider(
+  /// Slider(
   ///   value: _duelCommandment.toDouble(),
   ///   min: 1.0,
   ///   max: 10.0,
@@ -182,7 +182,7 @@
   /// ## Sample code
   ///
   /// ```dart
-  /// new Slider(
+  /// Slider(
   ///   value: _duelCommandment.toDouble(),
   ///   min: 1.0,
   ///   max: 10.0,
@@ -214,7 +214,7 @@
   /// ## Sample code
   ///
   /// ```dart
-  /// new Slider(
+  /// Slider(
   ///   value: _duelCommandment.toDouble(),
   ///   min: 1.0,
   ///   max: 10.0,
@@ -310,7 +310,7 @@
   /// announce a value with a currency label.
   ///
   /// ```dart
-  /// new Slider(
+  /// Slider(
   ///   value: _dollars.toDouble(),
   ///   min: 20.0,
   ///   max: 330.0,
diff --git a/packages/flutter/lib/src/material/slider_theme.dart b/packages/flutter/lib/src/material/slider_theme.dart
index 0f0558f..eee54fb 100644
--- a/packages/flutter/lib/src/material/slider_theme.dart
+++ b/packages/flutter/lib/src/material/slider_theme.dart
@@ -53,7 +53,7 @@
   /// ```dart
   /// class Launch extends StatefulWidget {
   ///   @override
-  ///   State createState() => new LaunchState();
+  ///   State createState() => LaunchState();
   /// }
   ///
   /// class LaunchState extends State<Launch> {
@@ -61,9 +61,9 @@
   ///
   ///   @override
   ///   Widget build(BuildContext context) {
-  ///     return new SliderTheme(
+  ///     return SliderTheme(
   ///       data: SliderTheme.of(context).copyWith(activeTrackColor: const Color(0xff804040)),
-  ///       child: new Slider(
+  ///       child: Slider(
   ///         onChanged: (double value) { setState(() { _rocketThrust = value; }); },
   ///         value: _rocketThrust,
   ///       ),
@@ -160,7 +160,7 @@
   /// ```dart
   /// class Blissful extends StatefulWidget {
   ///   @override
-  ///   State createState() => new BlissfulState();
+  ///   State createState() => BlissfulState();
   /// }
   ///
   /// class BlissfulState extends State<Blissful> {
@@ -168,9 +168,9 @@
   ///
   ///   @override
   ///   Widget build(BuildContext context) {
-  ///     return new SliderTheme(
+  ///     return SliderTheme(
   ///       data: SliderTheme.of(context).copyWith(activeTrackColor: const Color(0xff404080)),
-  ///       child: new Slider(
+  ///       child: Slider(
   ///         onChanged: (double value) { setState(() { _bliss = value; }); },
   ///         value: _bliss,
   ///       ),
diff --git a/packages/flutter/lib/src/material/snack_bar.dart b/packages/flutter/lib/src/material/snack_bar.dart
index 406a883..2e75a51 100644
--- a/packages/flutter/lib/src/material/snack_bar.dart
+++ b/packages/flutter/lib/src/material/snack_bar.dart
@@ -38,7 +38,7 @@
 ///
 /// ```dart
 /// Scaffold.of(context).showSnackBar(
-///   new SnackBar( ... )
+///   SnackBar( ... )
 /// ).closed.then((SnackBarClosedReason reason) {
 ///    ...
 /// });
diff --git a/packages/flutter/lib/src/material/switch.dart b/packages/flutter/lib/src/material/switch.dart
index d89b238..12ddb95 100644
--- a/packages/flutter/lib/src/material/switch.dart
+++ b/packages/flutter/lib/src/material/switch.dart
@@ -85,7 +85,7 @@
   /// gets rebuilt; for example:
   ///
   /// ```dart
-  /// new Switch(
+  /// Switch(
   ///   value: _giveVerse,
   ///   onChanged: (bool newValue) {
   ///     setState(() {
diff --git a/packages/flutter/lib/src/material/switch_list_tile.dart b/packages/flutter/lib/src/material/switch_list_tile.dart
index 151234c..67866aa 100644
--- a/packages/flutter/lib/src/material/switch_list_tile.dart
+++ b/packages/flutter/lib/src/material/switch_list_tile.dart
@@ -41,7 +41,7 @@
 /// member field called `_lights`.
 ///
 /// ```dart
-/// new SwitchListTile(
+/// SwitchListTile(
 ///   title: const Text('Lights'),
 ///   value: _lights,
 ///   onChanged: (bool value) { setState(() { _lights = value; }); },
@@ -106,14 +106,14 @@
   /// gets rebuilt; for example:
   ///
   /// ```dart
-  /// new SwitchListTile(
+  /// SwitchListTile(
   ///   value: _lights,
   ///   onChanged: (bool newValue) {
   ///     setState(() {
   ///       _lights = newValue;
   ///     });
   ///   },
-  ///   title: new Text('Lights'),
+  ///   title: Text('Lights'),
   /// )
   /// ```
   final ValueChanged<bool> onChanged;
diff --git a/packages/flutter/lib/src/material/tab_controller.dart b/packages/flutter/lib/src/material/tab_controller.dart
index 5a86473..1fed41f 100644
--- a/packages/flutter/lib/src/material/tab_controller.dart
+++ b/packages/flutter/lib/src/material/tab_controller.dart
@@ -27,13 +27,13 @@
 /// class MyTabbedPage extends StatefulWidget {
 ///   const MyTabbedPage({ Key key }) : super(key: key);
 ///   @override
-///   _MyTabbedPageState createState() => new _MyTabbedPageState();
+///   _MyTabbedPageState createState() => _MyTabbedPageState();
 /// }
 ///
 /// class _MyTabbedPageState extends State<MyTabbedPage> with SingleTickerProviderStateMixin {
 ///   final List<Tab> myTabs = <Tab>[
-///     new Tab(text: 'LEFT'),
-///     new Tab(text: 'RIGHT'),
+///     Tab(text: 'LEFT'),
+///     Tab(text: 'RIGHT'),
 ///   ];
 ///
 ///   TabController _tabController;
@@ -41,7 +41,7 @@
 ///   @override
 ///   void initState() {
 ///     super.initState();
-///     _tabController = new TabController(vsync: this, length: myTabs.length);
+///     _tabController = TabController(vsync: this, length: myTabs.length);
 ///   }
 ///
 ///  @override
@@ -52,17 +52,17 @@
 ///
 ///   @override
 ///   Widget build(BuildContext context) {
-///     return new Scaffold(
-///       appBar: new AppBar(
-///         bottom: new TabBar(
+///     return Scaffold(
+///       appBar: AppBar(
+///         bottom: TabBar(
 ///           controller: _tabController,
 ///           tabs: myTabs,
 ///         ),
 ///       ),
-///       body: new TabBarView(
+///       body: TabBarView(
 ///         controller: _tabController,
 ///         children: myTabs.map((Tab tab) {
-///           return new Center(child: new Text(tab.text));
+///           return Center(child: Text(tab.text));
 ///         }).toList(),
 ///       ),
 ///     );
@@ -216,23 +216,23 @@
 /// ```dart
 /// class MyDemo extends StatelessWidget {
 ///   final List<Tab> myTabs = <Tab>[
-///     new Tab(text: 'LEFT'),
-///     new Tab(text: 'RIGHT'),
+///     Tab(text: 'LEFT'),
+///     Tab(text: 'RIGHT'),
 ///   ];
 ///
 ///   @override
 ///   Widget build(BuildContext context) {
-///     return new DefaultTabController(
+///     return DefaultTabController(
 ///       length: myTabs.length,
-///       child: new Scaffold(
-///         appBar: new AppBar(
-///           bottom: new TabBar(
+///       child: Scaffold(
+///         appBar: AppBar(
+///           bottom: TabBar(
 ///             tabs: myTabs,
 ///           ),
 ///         ),
-///         body: new TabBarView(
+///         body: TabBarView(
 ///           children: myTabs.map((Tab tab) {
-///             return new Center(child: new Text(tab.text));
+///             return Center(child: Text(tab.text));
 ///           }).toList(),
 ///         ),
 ///       ),
diff --git a/packages/flutter/lib/src/material/theme.dart b/packages/flutter/lib/src/material/theme.dart
index cebb86b..6cbe614 100644
--- a/packages/flutter/lib/src/material/theme.dart
+++ b/packages/flutter/lib/src/material/theme.dart
@@ -89,7 +89,7 @@
   /// ```dart
   /// @override
   /// Widget build(BuildContext context) {
-  ///   return new Text(
+  ///   return Text(
   ///     'Example',
   ///     style: Theme.of(context).textTheme.title,
   ///   );
@@ -106,14 +106,14 @@
   /// ```dart
   /// @override
   /// Widget build(BuildContext context) {
-  ///   return new MaterialApp(
-  ///     theme: new ThemeData.light(),
-  ///     body: new Builder(
+  ///   return MaterialApp(
+  ///     theme: ThemeData.light(),
+  ///     body: Builder(
   ///       // Create an inner BuildContext so that we can refer to
   ///       // the Theme with Theme.of().
   ///       builder: (BuildContext context) {
-  ///         return new Center(
-  ///           child: new Text(
+  ///         return Center(
+  ///           child: Text(
   ///             'Example',
   ///             style: Theme.of(context).textTheme.title,
   ///           ),
diff --git a/packages/flutter/lib/src/material/time_picker.dart b/packages/flutter/lib/src/material/time_picker.dart
index b6336ab..a21d001 100644
--- a/packages/flutter/lib/src/material/time_picker.dart
+++ b/packages/flutter/lib/src/material/time_picker.dart
@@ -1654,7 +1654,7 @@
 ///
 /// ```dart
 /// showTimePicker(
-///   initialTime: new TimeOfDay.now(),
+///   initialTime: TimeOfDay.now(),
 ///   context: context,
 /// );
 /// ```
diff --git a/packages/flutter/lib/src/material/typography.dart b/packages/flutter/lib/src/material/typography.dart
index 7f83412..1476be9 100644
--- a/packages/flutter/lib/src/material/typography.dart
+++ b/packages/flutter/lib/src/material/typography.dart
@@ -120,7 +120,7 @@
   ///   @override
   ///   Widget build(BuildContext context) {
   ///     final ThemeData theme = Theme.of(context);
-  ///     return new Theme(
+  ///     return Theme(
   ///       data: theme.copyWith(
   ///         textTheme: theme.textTheme.copyWith(
   ///           title: theme.textTheme.title.copyWith(
@@ -204,9 +204,9 @@
   ///     // set the title, but everything else would be null. This isn't very
   ///     // useful, so merge it with the existing theme to keep all of the
   ///     // preexisting definitions for the other styles.
-  ///     TextTheme partialTheme = new TextTheme(title: new TextStyle(color: titleColor));
+  ///     TextTheme partialTheme = TextTheme(title: TextStyle(color: titleColor));
   ///     theme = theme.copyWith(textTheme: theme.textTheme.merge(partialTheme));
-  ///     return new Theme(data: theme, child: child);
+  ///     return Theme(data: theme, child: child);
   ///   }
   /// }
   /// ```
diff --git a/packages/flutter/lib/src/painting/borders.dart b/packages/flutter/lib/src/painting/borders.dart
index 42162ff..d1b4311 100644
--- a/packages/flutter/lib/src/painting/borders.dart
+++ b/packages/flutter/lib/src/painting/borders.dart
@@ -34,15 +34,15 @@
 /// it that is a darker shade of blue.
 ///
 /// ```dart
-/// new Container(
-///   padding: new EdgeInsets.all(8.0),
-///   decoration: new BoxDecoration(
-///     border: new Border(
-///       top: new BorderSide(width: 16.0, color: Colors.lightBlue.shade50),
-///       bottom: new BorderSide(width: 16.0, color: Colors.lightBlue.shade900),
+/// Container(
+///   padding: EdgeInsets.all(8.0),
+///   decoration: BoxDecoration(
+///     border: Border(
+///       top: BorderSide(width: 16.0, color: Colors.lightBlue.shade50),
+///       bottom: BorderSide(width: 16.0, color: Colors.lightBlue.shade900),
 ///     ),
 ///   ),
-///   child: new Text('Flutter in the sky', textAlign: TextAlign.center),
+///   child: Text('Flutter in the sky', textAlign: TextAlign.center),
 /// )
 /// ```
 ///
diff --git a/packages/flutter/lib/src/painting/box_border.dart b/packages/flutter/lib/src/painting/box_border.dart
index 0435603..6814b9d 100644
--- a/packages/flutter/lib/src/painting/box_border.dart
+++ b/packages/flutter/lib/src/painting/box_border.dart
@@ -251,19 +251,19 @@
 /// All four borders the same, two-pixel wide solid white:
 ///
 /// ```dart
-/// new Border.all(width: 2.0, color: const Color(0xFFFFFFFF))
+/// Border.all(width: 2.0, color: const Color(0xFFFFFFFF))
 /// ```
 ///
 /// The border for a material design divider:
 ///
 /// ```dart
-/// new Border(bottom: new BorderSide(color: Theme.of(context).dividerColor))
+/// Border(bottom: BorderSide(color: Theme.of(context).dividerColor))
 /// ```
 ///
 /// A 1990s-era "OK" button:
 ///
 /// ```dart
-/// new Container(
+/// Container(
 ///   decoration: const BoxDecoration(
 ///     border: Border(
 ///       top: BorderSide(width: 1.0, color: Color(0xFFFFFFFFFF)),
@@ -272,7 +272,7 @@
 ///       bottom: BorderSide(width: 1.0, color: Color(0xFFFF000000)),
 ///     ),
 ///   ),
-///   child: new Container(
+///   child: Container(
 ///     padding: const EdgeInsets.symmetric(horizontal: 20.0, vertical: 2.0),
 ///     decoration: const BoxDecoration(
 ///       border: Border(
diff --git a/packages/flutter/lib/src/painting/box_decoration.dart b/packages/flutter/lib/src/painting/box_decoration.dart
index dc1d586..f4f7e61 100644
--- a/packages/flutter/lib/src/painting/box_decoration.dart
+++ b/packages/flutter/lib/src/painting/box_decoration.dart
@@ -38,14 +38,14 @@
 /// draw an image with a border:
 ///
 /// ```dart
-/// new Container(
-///   decoration: new BoxDecoration(
+/// Container(
+///   decoration: BoxDecoration(
 ///     color: const Color(0xff7c94b6),
-///     image: new DecorationImage(
-///       image: new ExactAssetImage('images/flowers.jpeg'),
+///     image: DecorationImage(
+///       image: ExactAssetImage('images/flowers.jpeg'),
 ///       fit: BoxFit.cover,
 ///     ),
-///     border: new Border.all(
+///     border: Border.all(
 ///       color: Colors.black,
 ///       width: 8.0,
 ///     ),
diff --git a/packages/flutter/lib/src/painting/box_fit.dart b/packages/flutter/lib/src/painting/box_fit.dart
index fd74821..a0638c0 100644
--- a/packages/flutter/lib/src/painting/box_fit.dart
+++ b/packages/flutter/lib/src/painting/box_fit.dart
@@ -110,7 +110,7 @@
 ///
 /// ```dart
 /// void paintImage(ui.Image image, Rect outputRect, Canvas canvas, Paint paint, BoxFit fit) {
-///   final Size imageSize = new Size(image.width.toDouble(), image.height.toDouble());
+///   final Size imageSize = Size(image.width.toDouble(), image.height.toDouble());
 ///   final FittedSizes sizes = applyBoxFit(fit, imageSize, outputRect.size);
 ///   final Rect inputSubrect = Alignment.center.inscribe(sizes.source, Offset.zero & imageSize);
 ///   final Rect outputSubrect = Alignment.center.inscribe(sizes.destination, outputRect);
diff --git a/packages/flutter/lib/src/painting/gradient.dart b/packages/flutter/lib/src/painting/gradient.dart
index b6b1a69..b8b6c5b 100644
--- a/packages/flutter/lib/src/painting/gradient.dart
+++ b/packages/flutter/lib/src/painting/gradient.dart
@@ -242,11 +242,11 @@
 /// a [Container] display a [BoxDecoration] with a [LinearGradient].
 ///
 /// ```dart
-/// new Container(
-///   decoration: new BoxDecoration(
-///     gradient: new LinearGradient(
+/// Container(
+///   decoration: BoxDecoration(
+///     gradient: LinearGradient(
 ///       begin: Alignment.topLeft,
-///       end: new Alignment(0.8, 0.0), // 10% of the width, so there are ten blinds.
+///       end: Alignment(0.8, 0.0), // 10% of the width, so there are ten blinds.
 ///       colors: [const Color(0xFFFFFFEE), const Color(0xFF999999)], // whitish to gray
 ///       tileMode: TileMode.repeated, // repeats the gradient over the canvas
 ///     ),
@@ -476,7 +476,7 @@
 ///
 /// ```dart
 /// void paintSky(Canvas canvas, Rect rect) {
-///   var gradient = new RadialGradient(
+///   var gradient = RadialGradient(
 ///     center: const Alignment(0.7, -0.6), // near the top right
 ///     radius: 0.2,
 ///     colors: [
@@ -486,7 +486,7 @@
 ///     stops: [0.4, 1.0],
 ///   );
 ///   // rect is the area we are painting over
-///   var paint = new Paint()
+///   var paint = Paint()
 ///     ..shader = gradient.createShader(rect);
 ///   canvas.drawRect(rect, paint);
 /// }
@@ -733,9 +733,9 @@
 /// This sample draws a different color in each quadrant.
 ///
 /// ```dart
-/// new Container(
-///   decoration: new BoxDecoration(
-///     gradient: new SweepGradient(
+/// Container(
+///   decoration: BoxDecoration(
+///     gradient: SweepGradient(
 ///       center: FractionalOffset.center,
 ///       startAngle: 0.0,
 ///       endAngle: math.pi * 2,
diff --git a/packages/flutter/lib/src/painting/image_provider.dart b/packages/flutter/lib/src/painting/image_provider.dart
index 66a7f91..88b7508 100644
--- a/packages/flutter/lib/src/painting/image_provider.dart
+++ b/packages/flutter/lib/src/painting/image_provider.dart
@@ -187,7 +187,7 @@
 ///   final ImageProvider imageProvider;
 ///
 ///   @override
-///   _MyImageState createState() => new _MyImageState();
+///   _MyImageState createState() => _MyImageState();
 /// }
 ///
 /// class _MyImageState extends State<MyImage> {
@@ -237,7 +237,7 @@
 ///
 ///   @override
 ///   Widget build(BuildContext context) {
-///     return new RawImage(
+///     return RawImage(
 ///       image: _imageInfo?.image, // this is a dart:ui Image object
 ///       scale: _imageInfo?.scale ?? 1.0,
 ///     );
@@ -310,11 +310,11 @@
   ///
   ///   @override
   ///   Widget build(BuildContext context) {
-  ///     return new Image.network(url);
+  ///     return Image.network(url);
   ///   }
   ///
   ///   void evictImage() {
-  ///     final NetworkImage provider = new NetworkImage(url);
+  ///     final NetworkImage provider = NetworkImage(url);
   ///     provider.evict().then<void>((bool success) {
   ///       if (success)
   ///         debugPrint('removed image!');
@@ -659,7 +659,7 @@
 /// Then, to fetch the image and associate it with scale `1.5`, use
 ///
 /// ```dart
-/// new AssetImage('icons/heart.png', scale: 1.5)
+/// AssetImage('icons/heart.png', scale: 1.5)
 /// ```
 ///
 ///## Assets in packages
@@ -669,7 +669,7 @@
 /// `my_icons`. Then to fetch the image, use:
 ///
 /// ```dart
-/// new AssetImage('icons/heart.png', scale: 1.5, package: 'my_icons')
+/// AssetImage('icons/heart.png', scale: 1.5, package: 'my_icons')
 /// ```
 ///
 /// Assets used by the package itself should also be fetched using the [package]
diff --git a/packages/flutter/lib/src/painting/image_resolution.dart b/packages/flutter/lib/src/painting/image_resolution.dart
index 48b3e5b..4691c77 100644
--- a/packages/flutter/lib/src/painting/image_resolution.dart
+++ b/packages/flutter/lib/src/painting/image_resolution.dart
@@ -76,7 +76,7 @@
 ///
 /// Then, to fetch the image, use
 /// ```dart
-/// new AssetImage('icons/heart.png')
+/// AssetImage('icons/heart.png')
 /// ```
 ///
 /// ## Assets in packages
@@ -86,7 +86,7 @@
 /// `my_icons`. Then to fetch the image, use:
 ///
 /// ```dart
-/// new AssetImage('icons/heart.png', package: 'my_icons')
+/// AssetImage('icons/heart.png', package: 'my_icons')
 /// ```
 ///
 /// Assets used by the package itself should also be fetched using the [package]
diff --git a/packages/flutter/lib/src/painting/shape_decoration.dart b/packages/flutter/lib/src/painting/shape_decoration.dart
index 433a88f..7211d34 100644
--- a/packages/flutter/lib/src/painting/shape_decoration.dart
+++ b/packages/flutter/lib/src/painting/shape_decoration.dart
@@ -30,16 +30,16 @@
 /// "RGB" inside it:
 ///
 /// ```dart
-/// new Container(
-///   decoration: new ShapeDecoration(
+/// Container(
+///   decoration: ShapeDecoration(
 ///     color: Colors.white,
-///     shape: new Border.all(
+///     shape: Border.all(
 ///       color: Colors.red,
 ///       width: 8.0,
-///     ) + new Border.all(
+///     ) + Border.all(
 ///       color: Colors.green,
 ///       width: 8.0,
-///     ) + new Border.all(
+///     ) + Border.all(
 ///       color: Colors.blue,
 ///       width: 8.0,
 ///     ),
diff --git a/packages/flutter/lib/src/painting/text_span.dart b/packages/flutter/lib/src/painting/text_span.dart
index 6b8c79f..c5a5b75 100644
--- a/packages/flutter/lib/src/painting/text_span.dart
+++ b/packages/flutter/lib/src/painting/text_span.dart
@@ -32,9 +32,9 @@
 /// The text "Hello world!", in black:
 ///
 /// ```dart
-/// new TextSpan(
+/// TextSpan(
 ///   text: 'Hello world!',
-///   style: new TextStyle(color: Colors.black),
+///   style: TextStyle(color: Colors.black),
 /// )
 /// ```
 ///
@@ -104,7 +104,7 @@
   /// ```dart
   /// class BuzzingText extends StatefulWidget {
   ///   @override
-  ///   _BuzzingTextState createState() => new _BuzzingTextState();
+  ///   _BuzzingTextState createState() => _BuzzingTextState();
   /// }
   ///
   /// class _BuzzingTextState extends State<BuzzingText> {
@@ -113,7 +113,7 @@
   ///   @override
   ///   void initState() {
   ///     super.initState();
-  ///     _longPressRecognizer = new LongPressGestureRecognizer()
+  ///     _longPressRecognizer = LongPressGestureRecognizer()
   ///       ..onLongPress = _handlePress;
   ///   }
   ///
@@ -129,21 +129,21 @@
   ///
   ///   @override
   ///   Widget build(BuildContext context) {
-  ///     return new RichText(
-  ///       text: new TextSpan(
+  ///     return RichText(
+  ///       text: TextSpan(
   ///         text: 'Can you ',
-  ///         style: new TextStyle(color: Colors.black),
+  ///         style: TextStyle(color: Colors.black),
   ///         children: <TextSpan>[
-  ///           new TextSpan(
+  ///           TextSpan(
   ///             text: 'find the',
-  ///             style: new TextStyle(
+  ///             style: TextStyle(
   ///               color: Colors.green,
   ///               decoration: TextDecoration.underline,
   ///               decorationStyle: TextDecorationStyle.wavy,
   ///             ),
   ///             recognizer: _longPressRecognizer,
   ///           ),
-  ///           new TextSpan(
+  ///           TextSpan(
   ///             text: ' secret?',
   ///           ),
   ///         ],
diff --git a/packages/flutter/lib/src/painting/text_style.dart b/packages/flutter/lib/src/painting/text_style.dart
index 6134c1b..4af9eb9 100644
--- a/packages/flutter/lib/src/painting/text_style.dart
+++ b/packages/flutter/lib/src/painting/text_style.dart
@@ -24,9 +24,9 @@
 /// [Text] widget.
 ///
 /// ```dart
-/// new Text(
+/// Text(
 ///   'No, we need bold strokes. We need this plan.',
-///   style: new TextStyle(fontWeight: FontWeight.bold),
+///   style: TextStyle(fontWeight: FontWeight.bold),
 /// )
 /// ```
 ///
@@ -36,9 +36,9 @@
 /// override which is implicitly mixed with the ambient [DefaultTextStyle].
 ///
 /// ```dart
-/// new Text(
+/// Text(
 ///   'Welcome to the present, we\'re running a real nation.',
-///   style: new TextStyle(fontStyle: FontStyle.italic),
+///   style: TextStyle(fontStyle: FontStyle.italic),
 /// )
 /// ```
 ///
@@ -52,24 +52,24 @@
 /// implicitly mixed with the parent [TextSpan]'s [TextSpan.style].
 ///
 /// If [color] is specified, [foreground] must be null and vice versa. [color] is
-/// treated as a shorthand for `new Paint()..color = color`.
+/// treated as a shorthand for `Paint()..color = color`.
 ///
 /// ```dart
-/// new RichText(
-///   text: new TextSpan(
+/// RichText(
+///   text: TextSpan(
 ///     style: DefaultTextStyle.of(context).style,
 ///     children: <TextSpan>[
-///       new TextSpan(
+///       TextSpan(
 ///         text: 'You don\'t have the votes.\n',
-///         style: new TextStyle(color: Colors.black.withOpacity(0.6)),
+///         style: TextStyle(color: Colors.black.withOpacity(0.6)),
 ///       ),
-///       new TextSpan(
+///       TextSpan(
 ///         text: 'You don\'t have the votes!\n',
-///         style: new TextStyle(color: Colors.black.withOpacity(0.8)),
+///         style: TextStyle(color: Colors.black.withOpacity(0.8)),
 ///       ),
-///       new TextSpan(
+///       TextSpan(
 ///         text: 'You\'re gonna need congressional approval and you don\'t have the votes!\n',
-///         style: new TextStyle(color: Colors.black.withOpacity(1.0)),
+///         style: TextStyle(color: Colors.black.withOpacity(1.0)),
 ///       ),
 ///     ],
 ///   ),
@@ -82,7 +82,7 @@
 /// obtain a [TextStyle] that doubles the default font size.
 ///
 /// ```dart
-/// new Text(
+/// Text(
 ///   'These are wise words, enterprising men quote \'em.',
 ///   style: DefaultTextStyle.of(context).style.apply(fontSizeFactor: 2.0),
 /// )
@@ -94,9 +94,9 @@
 /// height is set to 100 logical pixels, so that the text is very spaced out.
 ///
 /// ```dart
-/// new Text(
+/// Text(
 ///   'Don\'t act surprised, you guys, cuz I wrote \'em!',
-///   style: new TextStyle(height: 100.0),
+///   style: TextStyle(height: 100.0),
 /// )
 /// ```
 ///
@@ -109,20 +109,20 @@
 /// does not automatically use the ambient [DefaultTextStyle].)
 ///
 /// ```dart
-/// new RichText(
-///   text: new TextSpan(
+/// RichText(
+///   text: TextSpan(
 ///     text: 'Don\'t tax the South ',
 ///     children: <TextSpan>[
-///       new TextSpan(
+///       TextSpan(
 ///         text: 'cuz',
-///         style: new TextStyle(
+///         style: TextStyle(
 ///           color: Colors.black,
 ///           decoration: TextDecoration.underline,
 ///           decorationColor: Colors.red,
 ///           decorationStyle: TextDecorationStyle.wavy,
 ///         ),
 ///       ),
-///       new TextSpan(
+///       TextSpan(
 ///         text: ' we got it made in the shade',
 ///       ),
 ///     ],
@@ -262,7 +262,7 @@
   /// The color to use when painting the text.
   ///
   /// If [foreground] is specified, this value must be null. The [color] property
-  /// is shorthand for `new Paint()..color = color`.
+  /// is shorthand for `Paint()..color = color`.
   ///
   /// In [merge], [apply], and [lerp], conflicts between [color] and [foreground]
   /// specification are resolved in [foreground]'s favor - i.e. if [foreground] is
@@ -333,7 +333,7 @@
   /// updates all the way through the framework.
   ///
   /// If [color] is specified, this value must be null. The [color] property
-  /// is shorthand for `new Paint()..color = color`.
+  /// is shorthand for `Paint()..color = color`.
   ///
   /// In [merge], [apply], and [lerp], conflicts between [color] and [foreground]
   /// specification are resolved in [foreground]'s favor - i.e. if [foreground] is
diff --git a/packages/flutter/lib/src/physics/gravity_simulation.dart b/packages/flutter/lib/src/physics/gravity_simulation.dart
index 2873d65..e67c00d 100644
--- a/packages/flutter/lib/src/physics/gravity_simulation.dart
+++ b/packages/flutter/lib/src/physics/gravity_simulation.dart
@@ -16,7 +16,7 @@
 ///
 /// ```dart
 /// void _startFall() {
-///   _controller.animateWith(new GravitySimulation(
+///   _controller.animateWith(GravitySimulation(
 ///     10.0, // acceleration, pixels per second per second
 ///     0.0, // starting position, pixels
 ///     300.0, // ending position, pixels
diff --git a/packages/flutter/lib/src/rendering/custom_layout.dart b/packages/flutter/lib/src/rendering/custom_layout.dart
index 201af4c..6d02dda 100644
--- a/packages/flutter/lib/src/rendering/custom_layout.dart
+++ b/packages/flutter/lib/src/rendering/custom_layout.dart
@@ -65,13 +65,13 @@
 ///     Size leaderSize = Size.zero;
 ///
 ///     if (hasChild(_Slot.leader)) {
-///       leaderSize = layoutChild(_Slot.leader, new BoxConstraints.loose(size));
+///       leaderSize = layoutChild(_Slot.leader, BoxConstraints.loose(size));
 ///       positionChild(_Slot.leader, Offset.zero);
 ///     }
 ///
 ///     if (hasChild(_Slot.follower)) {
-///       layoutChild(_Slot.follower, new BoxConstraints.tight(leaderSize));
-///       positionChild(_Slot.follower, new Offset(size.width - leaderSize.width,
+///       layoutChild(_Slot.follower, BoxConstraints.tight(leaderSize));
+///       positionChild(_Slot.follower, Offset(size.width - leaderSize.width,
 ///           size.height - leaderSize.height));
 ///     }
 ///   }
diff --git a/packages/flutter/lib/src/rendering/custom_paint.dart b/packages/flutter/lib/src/rendering/custom_paint.dart
index bf8ef59..55a3a6c 100644
--- a/packages/flutter/lib/src/rendering/custom_paint.dart
+++ b/packages/flutter/lib/src/rendering/custom_paint.dart
@@ -72,7 +72,7 @@
 ///   @override
 ///   void paint(Canvas canvas, Size size) {
 ///     var rect = Offset.zero & size;
-///     var gradient = new RadialGradient(
+///     var gradient = RadialGradient(
 ///       center: const Alignment(0.7, -0.6),
 ///       radius: 0.2,
 ///       colors: [const Color(0xFFFFFF00), const Color(0xFF0099FF)],
@@ -80,7 +80,7 @@
 ///     );
 ///     canvas.drawRect(
 ///       rect,
-///       new Paint()..shader = gradient.createShader(rect),
+///       Paint()..shader = gradient.createShader(rect),
 ///     );
 ///   }
 ///
@@ -93,11 +93,11 @@
 ///       // touch.
 ///       var rect = Offset.zero & size;
 ///       var width = size.shortestSide * 0.4;
-///       rect = const Alignment(0.8, -0.9).inscribe(new Size(width, width), rect);
+///       rect = const Alignment(0.8, -0.9).inscribe(Size(width, width), rect);
 ///       return [
-///         new CustomPainterSemantics(
+///         CustomPainterSemantics(
 ///           rect: rect,
-///           properties: new SemanticsProperties(
+///           properties: SemanticsProperties(
 ///             label: 'Sun',
 ///             textDirection: TextDirection.ltr,
 ///           ),
diff --git a/packages/flutter/lib/src/rendering/proxy_box.dart b/packages/flutter/lib/src/rendering/proxy_box.dart
index 086f2a3..148f960 100644
--- a/packages/flutter/lib/src/rendering/proxy_box.dart
+++ b/packages/flutter/lib/src/rendering/proxy_box.dart
@@ -2586,11 +2586,11 @@
   ///   PngHome({Key key}) : super(key: key);
   ///
   ///   @override
-  ///   _PngHomeState createState() => new _PngHomeState();
+  ///   _PngHomeState createState() => _PngHomeState();
   /// }
   ///
   /// class _PngHomeState extends State<PngHome> {
-  ///   GlobalKey globalKey = new GlobalKey();
+  ///   GlobalKey globalKey = GlobalKey();
   ///
   ///   Future<void> _capturePng() async {
   ///     RenderRepaintBoundary boundary = globalKey.currentContext.findRenderObject();
diff --git a/packages/flutter/lib/src/services/platform_channel.dart b/packages/flutter/lib/src/services/platform_channel.dart
index 98c89fb..6c4484a 100644
--- a/packages/flutter/lib/src/services/platform_channel.dart
+++ b/packages/flutter/lib/src/services/platform_channel.dart
@@ -184,7 +184,7 @@
   ///   final String artist;
   ///
   ///   static Song fromJson(dynamic json) {
-  ///     return new Song(json['id'], json['title'], json['artist']);
+  ///     return Song(json['id'], json['title'], json['artist']);
   ///   }
   /// }
   /// ```
@@ -200,7 +200,7 @@
   ///         break;
   ///       case "getSongs":
   ///         final List<MusicApi.Track> tracks = MusicApi.getTracks();
-  ///         final List<Object> json = new ArrayList<>(tracks.size());
+  ///         final List<Object> json = ArrayList<>(tracks.size());
   ///         for (MusicApi.Track track : tracks) {
   ///           json.add(track.toJson()); // Map<String, Object> entries
   ///         }
diff --git a/packages/flutter/lib/src/widgets/animated_cross_fade.dart b/packages/flutter/lib/src/widgets/animated_cross_fade.dart
index d89bfbf..507350b 100644
--- a/packages/flutter/lib/src/widgets/animated_cross_fade.dart
+++ b/packages/flutter/lib/src/widgets/animated_cross_fade.dart
@@ -39,17 +39,17 @@
 ///
 /// ```dart
 /// Widget defaultLayoutBuilder(Widget topChild, Key topChildKey, Widget bottomChild, Key bottomChildKey) {
-///   return new Stack(
+///   return Stack(
 ///     fit: StackFit.loose,
 ///     children: <Widget>[
-///       new Positioned(
+///       Positioned(
 ///         key: bottomChildKey,
 ///         left: 0.0,
 ///         top: 0.0,
 ///         right: 0.0,
 ///         child: bottomChild,
 ///       ),
-///       new Positioned(
+///       Positioned(
 ///         key: topChildKey,
 ///         child: topChild,
 ///       )
@@ -87,7 +87,7 @@
 /// over three seconds.
 ///
 /// ```dart
-/// new AnimatedCrossFade(
+/// AnimatedCrossFade(
 ///   duration: const Duration(seconds: 3),
 ///   firstChild: const FlutterLogo(style: FlutterLogoStyle.horizontal, size: 100.0),
 ///   secondChild: const FlutterLogo(style: FlutterLogoStyle.stacked, size: 100.0),
diff --git a/packages/flutter/lib/src/widgets/animated_list.dart b/packages/flutter/lib/src/widgets/animated_list.dart
index a5e5e9e..efeeb69 100644
--- a/packages/flutter/lib/src/widgets/animated_list.dart
+++ b/packages/flutter/lib/src/widgets/animated_list.dart
@@ -196,9 +196,9 @@
 /// can refer to the [AnimatedList]'s state with a global key:
 ///
 /// ```dart
-/// GlobalKey<AnimatedListState> listKey = new GlobalKey<AnimatedListState>();
+/// GlobalKey<AnimatedListState> listKey = GlobalKey<AnimatedListState>();
 /// ...
-/// new AnimatedList(key: listKey, ...);
+/// AnimatedList(key: listKey, ...);
 /// ...
 /// listKey.currentState.insert(123);
 /// ```
diff --git a/packages/flutter/lib/src/widgets/animated_switcher.dart b/packages/flutter/lib/src/widgets/animated_switcher.dart
index 4d96c48..136fad5 100644
--- a/packages/flutter/lib/src/widgets/animated_switcher.dart
+++ b/packages/flutter/lib/src/widgets/animated_switcher.dart
@@ -79,7 +79,7 @@
 ///   const ClickCounter({Key key}) : super(key: key);
 ///
 ///   @override
-///   _ClickCounterState createState() => new _ClickCounterState();
+///   _ClickCounterState createState() => _ClickCounterState();
 /// }
 ///
 /// class _ClickCounterState extends State<ClickCounter> {
@@ -87,26 +87,26 @@
 ///
 ///   @override
 ///   Widget build(BuildContext context) {
-///     return new MaterialApp(
-///       home: new Material(
+///     return MaterialApp(
+///       home: Material(
 ///         child: Column(
 ///           mainAxisAlignment: MainAxisAlignment.center,
 ///           children: <Widget>[
-///             new AnimatedSwitcher(
+///             AnimatedSwitcher(
 ///               duration: const Duration(milliseconds: 500),
 ///               transitionBuilder: (Widget child, Animation<double> animation) {
-///                 return new ScaleTransition(child: child, scale: animation);
+///                 return ScaleTransition(child: child, scale: animation);
 ///               },
-///               child: new Text(
+///               child: Text(
 ///                 '$_count',
 ///                 // This key causes the AnimatedSwitcher to interpret this as a "new"
 ///                 // child each time the count changes, so that it will begin its animation
 ///                 // when the count changes.
-///                 key: new ValueKey<int>(_count),
+///                 key: ValueKey<int>(_count),
 ///                 style: Theme.of(context).textTheme.display1,
 ///               ),
 ///             ),
-///             new RaisedButton(
+///             RaisedButton(
 ///               child: const Text('Increment'),
 ///               onPressed: () {
 ///                 setState(() {
diff --git a/packages/flutter/lib/src/widgets/async.dart b/packages/flutter/lib/src/widgets/async.dart
index 455241b..b73111c 100644
--- a/packages/flutter/lib/src/widgets/async.dart
+++ b/packages/flutter/lib/src/widgets/async.dart
@@ -348,16 +348,16 @@
 /// set by a selector elsewhere in the UI.
 ///
 /// ```dart
-/// new StreamBuilder<int>(
+/// StreamBuilder<int>(
 ///   stream: _lot?.bids, // a Stream<int> or null
 ///   builder: (BuildContext context, AsyncSnapshot<int> snapshot) {
 ///     if (snapshot.hasError)
-///       return new Text('Error: ${snapshot.error}');
+///       return Text('Error: ${snapshot.error}');
 ///     switch (snapshot.connectionState) {
-///       case ConnectionState.none: return new Text('Select lot');
-///       case ConnectionState.waiting: return new Text('Awaiting bids...');
-///       case ConnectionState.active: return new Text('\$${snapshot.data}');
-///       case ConnectionState.done: return new Text('\$${snapshot.data} (closed)');
+///       case ConnectionState.none: return Text('Select lot');
+///       case ConnectionState.waiting: return Text('Awaiting bids...');
+///       case ConnectionState.active: return Text('\$${snapshot.data}');
+///       case ConnectionState.done: return Text('\$${snapshot.data} (closed)');
 ///     }
 ///     return null; // unreachable
 ///   },
@@ -479,19 +479,19 @@
 /// `_calculation` field is set by pressing a button elsewhere in the UI.
 ///
 /// ```dart
-/// new FutureBuilder<String>(
+/// FutureBuilder<String>(
 ///   future: _calculation, // a previously-obtained Future<String> or null
 ///   builder: (BuildContext context, AsyncSnapshot<String> snapshot) {
 ///     switch (snapshot.connectionState) {
 ///       case ConnectionState.none:
-///         return new Text('Press button to start.');
+///         return Text('Press button to start.');
 ///       case ConnectionState.active:
 ///       case ConnectionState.waiting:
-///         return new Text('Awaiting result...');
+///         return Text('Awaiting result...');
 ///       case ConnectionState.done:
 ///         if (snapshot.hasError)
-///           return new Text('Error: ${snapshot.error}');
-///         return new Text('Result: ${snapshot.data}');
+///           return Text('Error: ${snapshot.error}');
+///         return Text('Result: ${snapshot.data}');
 ///     }
 ///     return null; // unreachable
 ///   },
diff --git a/packages/flutter/lib/src/widgets/basic.dart b/packages/flutter/lib/src/widgets/basic.dart
index 0f9f224..bb6fbf7 100644
--- a/packages/flutter/lib/src/widgets/basic.dart
+++ b/packages/flutter/lib/src/widgets/basic.dart
@@ -134,7 +134,7 @@
 /// hides it when it is false:
 ///
 /// ```dart
-/// new Opacity(
+/// Opacity(
 ///   opacity: _visible ? 1.0 : 0.0,
 ///   child: const Text('Now you see me, now you don\'t!'),
 /// )
@@ -230,9 +230,9 @@
 /// This example makes the text look like it is on fire:
 ///
 /// ```dart
-/// new ShaderMask(
+/// ShaderMask(
 ///   shaderCallback: (Rect bounds) {
-///     return new RadialGradient(
+///     return RadialGradient(
 ///       center: Alignment.topLeft,
 ///       radius: 1.0,
 ///       colors: <Color>[Colors.yellow, Colors.deepOrange.shade900],
@@ -362,10 +362,10 @@
 /// text.
 ///
 /// ```dart
-/// new CustomPaint(
-///   painter: new Sky(),
-///   child: new Center(
-///     child: new Text(
+/// CustomPaint(
+///   painter: Sky(),
+///   child: Center(
+///     child: Text(
 ///       'Once upon a time...',
 ///       style: const TextStyle(
 ///         fontSize: 40.0,
@@ -476,11 +476,11 @@
 /// the top half of an [Image]:
 ///
 /// ```dart
-/// new ClipRect(
-///   child: new Align(
+/// ClipRect(
+///   child: Align(
 ///     alignment: Alignment.topCenter,
 ///     heightFactor: 0.5,
-///     child: new Image.network(userAvatarUrl),
+///     child: Image.network(userAvatarUrl),
 ///   ),
 /// )
 /// ```
@@ -870,12 +870,12 @@
 /// top right corner pinned to its original position.
 ///
 /// ```dart
-/// new Container(
+/// Container(
 ///   color: Colors.black,
-///   child: new Transform(
+///   child: Transform(
 ///     alignment: Alignment.topRight,
-///     transform: new Matrix4.skewY(0.3)..rotateZ(-math.pi / 12.0),
-///     child: new Container(
+///     transform: Matrix4.skewY(0.3)..rotateZ(-math.pi / 12.0),
+///     child: Container(
 ///       padding: const EdgeInsets.all(8.0),
 ///       color: const Color(0xFFE8581C),
 ///       child: const Text('Apartment for rent!'),
@@ -918,9 +918,9 @@
   /// fifteen degrees.
   ///
   /// ```dart
-  /// new Transform.rotate(
+  /// Transform.rotate(
   ///   angle: -math.pi / 12.0,
-  ///   child: new Container(
+  ///   child: Container(
   ///     padding: const EdgeInsets.all(8.0),
   ///     color: const Color(0xFFE8581C),
   ///     child: const Text('Apartment for rent!'),
@@ -946,9 +946,9 @@
   /// This example shifts the silver-colored child down by fifteen pixels.
   ///
   /// ```dart
-  /// new Transform.translate(
+  /// Transform.translate(
   ///   offset: const Offset(0.0, 15.0),
-  ///   child: new Container(
+  ///   child: Container(
   ///     padding: const EdgeInsets.all(8.0),
   ///     color: const Color(0xFF7F7F7F),
   ///     child: const Text('Quarter'),
@@ -979,9 +979,9 @@
   /// is half the size it would otherwise be.
   ///
   /// ```dart
-  /// new Transform.scale(
+  /// Transform.scale(
   ///   scale: 0.5,
-  ///   child: new Container(
+  ///   child: Container(
   ///     padding: const EdgeInsets.all(8.0),
   ///     color: const Color(0xFFE8581C),
   ///     child: const Text('Bad Ideas'),
@@ -1310,7 +1310,7 @@
 /// to top, like an axis label on a graph:
 ///
 /// ```dart
-/// new RotatedBox(
+/// RotatedBox(
 ///   quarterTurns: 3,
 ///   child: const Text('Hello World!'),
 /// )
@@ -1358,8 +1358,8 @@
 /// in each direction:
 ///
 /// ```dart
-/// new Padding(
-///   padding: new EdgeInsets.all(8.0),
+/// Padding(
+///   padding: EdgeInsets.all(8.0),
 ///   child: const Card(child: Text('Hello World!')),
 /// )
 /// ```
@@ -1697,7 +1697,7 @@
 /// exact size 200x300, parental constraints permitting:
 ///
 /// ```dart
-/// new SizedBox(
+/// SizedBox(
 ///   width: 200.0,
 ///   height: 300.0,
 ///   child: const Card(child: Text('Hello World!')),
@@ -1804,7 +1804,7 @@
 /// parent, by applying [BoxConstraints.expand] constraints:
 ///
 /// ```dart
-/// new ConstrainedBox(
+/// ConstrainedBox(
 ///   constraints: const BoxConstraints.expand(),
 ///   child: const Card(child: Text('Hello World!')),
 /// )
@@ -3529,16 +3529,16 @@
 /// the third:
 ///
 /// ```dart
-/// new Row(
+/// Row(
 ///   children: <Widget>[
-///     new Expanded(
-///       child: new Text('Deliver features faster', textAlign: TextAlign.center),
+///     Expanded(
+///       child: Text('Deliver features faster', textAlign: TextAlign.center),
 ///     ),
-///     new Expanded(
-///       child: new Text('Craft beautiful UIs', textAlign: TextAlign.center),
+///     Expanded(
+///       child: Text('Craft beautiful UIs', textAlign: TextAlign.center),
 ///     ),
-///     new Expanded(
-///       child: new FittedBox(
+///     Expanded(
+///       child: FittedBox(
 ///         fit: BoxFit.contain, // otherwise the logo will be tiny
 ///         child: const FlutterLogo(),
 ///       ),
@@ -3564,7 +3564,7 @@
 /// Suppose, for instance, that you had this code:
 ///
 /// ```dart
-/// new Row(
+/// Row(
 ///   children: <Widget>[
 ///     const FlutterLogo(),
 ///     const Text('Flutter\'s hot reload helps you quickly and easily experiment, build UIs, add features, and fix bug faster. Experience sub-second reload times, without losing state, on emulators, simulators, and hardware for iOS and Android.'),
@@ -3589,7 +3589,7 @@
 /// row that the child should be given the remaining room:
 ///
 /// ```dart
-/// new Row(
+/// Row(
 ///   children: <Widget>[
 ///     const FlutterLogo(),
 ///     const Expanded(
@@ -3711,12 +3711,12 @@
 /// being made to fill all the remaining space.
 ///
 /// ```dart
-/// new Column(
+/// Column(
 ///   children: <Widget>[
-///     new Text('Deliver features faster'),
-///     new Text('Craft beautiful UIs'),
-///     new Expanded(
-///       child: new FittedBox(
+///     Text('Deliver features faster'),
+///     Text('Craft beautiful UIs'),
+///     Expanded(
+///       child: FittedBox(
 ///         fit: BoxFit.contain, // otherwise the logo will be tiny
 ///         child: const FlutterLogo(),
 ///       ),
@@ -3732,17 +3732,17 @@
 /// fit the children.
 ///
 /// ```dart
-/// new Column(
+/// Column(
 ///   crossAxisAlignment: CrossAxisAlignment.start,
 ///   mainAxisSize: MainAxisSize.min,
 ///   children: <Widget>[
-///     new Text('We move under cover and we move as one'),
-///     new Text('Through the night, we have one shot to live another day'),
-///     new Text('We cannot let a stray gunshot give us away'),
-///     new Text('We will fight up close, seize the moment and stay in it'),
-///     new Text('It’s either that or meet the business end of a bayonet'),
-///     new Text('The code word is ‘Rochambeau,’ dig me?'),
-///     new Text('Rochambeau!', style: DefaultTextStyle.of(context).style.apply(fontSizeFactor: 2.0)),
+///     Text('We move under cover and we move as one'),
+///     Text('Through the night, we have one shot to live another day'),
+///     Text('We cannot let a stray gunshot give us away'),
+///     Text('We will fight up close, seize the moment and stay in it'),
+///     Text('It’s either that or meet the business end of a bayonet'),
+///     Text('The code word is ‘Rochambeau,’ dig me?'),
+///     Text('Rochambeau!', style: DefaultTextStyle.of(context).style.apply(fontSizeFactor: 2.0)),
 ///   ],
 /// )
 /// ```
@@ -4005,25 +4005,25 @@
 /// that they flow across lines as necessary.
 ///
 /// ```dart
-/// new Wrap(
+/// Wrap(
 ///   spacing: 8.0, // gap between adjacent chips
 ///   runSpacing: 4.0, // gap between lines
 ///   children: <Widget>[
-///     new Chip(
-///       avatar: new CircleAvatar(backgroundColor: Colors.blue.shade900, child: new Text('AH')),
-///       label: new Text('Hamilton'),
+///     Chip(
+///       avatar: CircleAvatar(backgroundColor: Colors.blue.shade900, child: Text('AH')),
+///       label: Text('Hamilton'),
 ///     ),
-///     new Chip(
-///       avatar: new CircleAvatar(backgroundColor: Colors.blue.shade900, child: new Text('ML')),
-///       label: new Text('Lafayette'),
+///     Chip(
+///       avatar: CircleAvatar(backgroundColor: Colors.blue.shade900, child: Text('ML')),
+///       label: Text('Lafayette'),
 ///     ),
-///     new Chip(
-///       avatar: new CircleAvatar(backgroundColor: Colors.blue.shade900, child: new Text('HM')),
-///       label: new Text('Mulligan'),
+///     Chip(
+///       avatar: CircleAvatar(backgroundColor: Colors.blue.shade900, child: Text('HM')),
+///       label: Text('Mulligan'),
 ///     ),
-///     new Chip(
-///       avatar: new CircleAvatar(backgroundColor: Colors.blue.shade900, child: new Text('JL')),
-///       label: new Text('Laurens'),
+///     Chip(
+///       avatar: CircleAvatar(backgroundColor: Colors.blue.shade900, child: Text('JL')),
+///       label: Text('Laurens'),
 ///     ),
 ///   ],
 /// )
@@ -4329,13 +4329,13 @@
 /// ## Sample code
 ///
 /// ```dart
-/// new RichText(
-///   text: new TextSpan(
+/// RichText(
+///   text: TextSpan(
 ///     text: 'Hello ',
 ///     style: DefaultTextStyle.of(context).style,
 ///     children: <TextSpan>[
-///       new TextSpan(text: 'bold', style: new TextStyle(fontWeight: FontWeight.bold)),
-///       new TextSpan(text: ' world!'),
+///       TextSpan(text: 'bold', style: TextStyle(fontWeight: FontWeight.bold)),
+///       TextSpan(text: ' world!'),
 ///     ],
 ///   ),
 /// )
@@ -4665,7 +4665,7 @@
 ///   @override
 ///   Future<ByteData> load(String key) async {
 ///     if (key == 'resources/test')
-///       return new ByteData.view(new Uint8List.fromList(utf8.encode('Hello World!')).buffer);
+///       return ByteData.view(Uint8List.fromList(utf8.encode('Hello World!')).buffer);
 ///     return null;
 ///   }
 /// }
@@ -4676,10 +4676,10 @@
 ///
 /// ```dart
 /// await tester.pumpWidget(
-///   new MaterialApp(
-///     home: new DefaultAssetBundle(
-///       bundle: new TestAssetBundle(),
-///       child: new TestWidget(),
+///   MaterialApp(
+///     home: DefaultAssetBundle(
+///       bundle: TestAssetBundle(),
+///       child: TestWidget(),
 ///     ),
 ///   ),
 /// );
diff --git a/packages/flutter/lib/src/widgets/binding.dart b/packages/flutter/lib/src/widgets/binding.dart
index 5140bfd..5b4d4b2 100644
--- a/packages/flutter/lib/src/widgets/binding.dart
+++ b/packages/flutter/lib/src/widgets/binding.dart
@@ -40,7 +40,7 @@
 ///   const AppLifecycleReactor({ Key key }) : super(key: key);
 ///
 ///   @override
-///   _AppLifecycleReactorState createState() => new _AppLifecycleReactorState();
+///   _AppLifecycleReactorState createState() => _AppLifecycleReactorState();
 /// }
 ///
 /// class _AppLifecycleReactorState extends State<AppLifecycleReactor> with WidgetsBindingObserver {
@@ -65,7 +65,7 @@
 ///
 ///   @override
 ///   Widget build(BuildContext context) {
-///     return new Text('Last notification: $_notification');
+///     return Text('Last notification: $_notification');
 ///   }
 /// }
 /// ```
@@ -117,7 +117,7 @@
   ///   const MetricsReactor({ Key key }) : super(key: key);
   ///
   ///   @override
-  ///   _MetricsReactorState createState() => new _MetricsReactorState();
+  ///   _MetricsReactorState createState() => _MetricsReactorState();
   /// }
   ///
   /// class _MetricsReactorState extends State<MetricsReactor> with WidgetsBindingObserver {
@@ -142,7 +142,7 @@
   ///
   ///   @override
   ///   Widget build(BuildContext context) {
-  ///     return new Text('Current size: $_lastSize');
+  ///     return Text('Current size: $_lastSize');
   ///   }
   /// }
   /// ```
@@ -172,7 +172,7 @@
   ///   const TextScaleFactorReactor({ Key key }) : super(key: key);
   ///
   ///   @override
-  ///   _TextScaleFactorReactorState createState() => new _TextScaleFactorReactorState();
+  ///   _TextScaleFactorReactorState createState() => _TextScaleFactorReactorState();
   /// }
   ///
   /// class _TextScaleFactorReactorState extends State<TextScaleFactorReactor> with WidgetsBindingObserver {
@@ -197,7 +197,7 @@
   ///
   ///   @override
   ///   Widget build(BuildContext context) {
-  ///     return new Text('Current scale factor: $_lastTextScaleFactor');
+  ///     return Text('Current scale factor: $_lastTextScaleFactor');
   ///   }
   /// }
   /// ```
diff --git a/packages/flutter/lib/src/widgets/container.dart b/packages/flutter/lib/src/widgets/container.dart
index e9b5572..83f71a4 100644
--- a/packages/flutter/lib/src/widgets/container.dart
+++ b/packages/flutter/lib/src/widgets/container.dart
@@ -22,9 +22,9 @@
 /// This sample shows a radial gradient that draws a moon on a night sky:
 ///
 /// ```dart
-/// new DecoratedBox(
-///   decoration: new BoxDecoration(
-///     gradient: new RadialGradient(
+/// DecoratedBox(
+///   decoration: BoxDecoration(
+///     gradient: RadialGradient(
 ///       center: const Alignment(-0.5, -0.6),
 ///       radius: 0.15,
 ///       colors: <Color>[
@@ -183,8 +183,8 @@
 /// neighboring widgets:
 ///
 /// ```dart
-/// new Center(
-///   child: new Container(
+/// Center(
+///   child: Container(
 ///     margin: const EdgeInsets.all(10.0),
 ///     color: const Color(0xFF00FF00),
 ///     width: 48.0,
@@ -203,21 +203,21 @@
 /// entire contraption to complete the effect.
 ///
 /// ```dart
-/// new Container(
-///   constraints: new BoxConstraints.expand(
+/// Container(
+///   constraints: BoxConstraints.expand(
 ///     height: Theme.of(context).textTheme.display1.fontSize * 1.1 + 200.0,
 ///   ),
 ///   padding: const EdgeInsets.all(8.0),
 ///   color: Colors.teal.shade700,
 ///   alignment: Alignment.center,
-///   child: new Text('Hello World', style: Theme.of(context).textTheme.display1.copyWith(color: Colors.white)),
-///   foregroundDecoration: new BoxDecoration(
-///     image: new DecorationImage(
-///       image: new NetworkImage('https://www.example.com/images/frame.png'),
-///       centerSlice: new Rect.fromLTRB(270.0, 180.0, 1360.0, 730.0),
+///   child: Text('Hello World', style: Theme.of(context).textTheme.display1.copyWith(color: Colors.white)),
+///   foregroundDecoration: BoxDecoration(
+///     image: DecorationImage(
+///       image: NetworkImage('https://www.example.com/images/frame.png'),
+///       centerSlice: Rect.fromLTRB(270.0, 180.0, 1360.0, 730.0),
 ///     ),
 ///   ),
-///   transform: new Matrix4.rotationZ(0.1),
+///   transform: Matrix4.rotationZ(0.1),
 /// )
 /// ```
 ///
diff --git a/packages/flutter/lib/src/widgets/fade_in_image.dart b/packages/flutter/lib/src/widgets/fade_in_image.dart
index d6683ab..19cf709 100644
--- a/packages/flutter/lib/src/widgets/fade_in_image.dart
+++ b/packages/flutter/lib/src/widgets/fade_in_image.dart
@@ -52,10 +52,10 @@
 /// ## Sample code
 ///
 /// ```dart
-/// new FadeInImage(
+/// FadeInImage(
 ///   // here `bytes` is a Uint8List containing the bytes for the in-memory image
-///   placeholder: new MemoryImage(bytes),
-///   image: new NetworkImage('https://backend.example.com/image.png'),
+///   placeholder: MemoryImage(bytes),
+///   image: NetworkImage('https://backend.example.com/image.png'),
 /// )
 /// ```
 class FadeInImage extends StatefulWidget {
diff --git a/packages/flutter/lib/src/widgets/framework.dart b/packages/flutter/lib/src/widgets/framework.dart
index 12e2802..eabee87 100644
--- a/packages/flutter/lib/src/widgets/framework.dart
+++ b/packages/flutter/lib/src/widgets/framework.dart
@@ -508,7 +508,7 @@
 ///
 ///   @override
 ///   Widget build(BuildContext context) {
-///     return new Container(color: const Color(0xFF2DBD3A));
+///     return Container(color: const Color(0xFF2DBD3A));
 ///   }
 /// }
 /// ```
@@ -531,7 +531,7 @@
 ///
 ///   @override
 ///   Widget build(BuildContext context) {
-///     return new Container(color: color, child: child);
+///     return Container(color: color, child: child);
 ///   }
 /// }
 /// ```
@@ -714,13 +714,13 @@
 ///   const YellowBird({ Key key }) : super(key: key);
 ///
 ///   @override
-///   _YellowBirdState createState() => new _YellowBirdState();
+///   _YellowBirdState createState() => _YellowBirdState();
 /// }
 ///
 /// class _YellowBirdState extends State<YellowBird> {
 ///   @override
 ///   Widget build(BuildContext context) {
-///     return new Container(color: const Color(0xFFFFE306));
+///     return Container(color: const Color(0xFFFFE306));
 ///   }
 /// }
 /// ```
@@ -745,7 +745,7 @@
 ///
 ///   final Widget child;
 ///
-///   _BirdState createState() => new _BirdState();
+///   _BirdState createState() => _BirdState();
 /// }
 ///
 /// class _BirdState extends State<Bird> {
@@ -757,9 +757,9 @@
 ///
 ///   @override
 ///   Widget build(BuildContext context) {
-///     return new Container(
+///     return Container(
 ///       color: widget.color,
-///       transform: new Matrix4.diagonal3Values(_size, _size, 1.0),
+///       transform: Matrix4.diagonal3Values(_size, _size, 1.0),
 ///       child: widget.child,
 ///     );
 ///   }
@@ -795,7 +795,7 @@
   ///
   /// ```dart
   /// @override
-  /// _MyState createState() => new _MyState();
+  /// _MyState createState() => _MyState();
   /// ```
   ///
   /// The framework can call this method multiple times over the lifetime of
@@ -1082,7 +1082,7 @@
   ///   });
   ///   Directory directory = await getApplicationDocumentsDirectory();
   ///   final String dirName = directory.path;
-  ///   await new File('$dir/counter.txt').writeAsString('$_counter');
+  ///   await File('$dir/counter.txt').writeAsString('$_counter');
   ///   return null;
   /// }
   /// ```
@@ -1790,16 +1790,16 @@
 ///   @override
 ///   Widget build(BuildContext context) {
 ///     // here, Scaffold.of(context) returns null
-///     return new Scaffold(
-///       appBar: new AppBar(title: new Text('Demo')),
-///       body: new Builder(
+///     return Scaffold(
+///       appBar: AppBar(title: Text('Demo')),
+///       body: Builder(
 ///         builder: (BuildContext context) {
-///           return new FlatButton(
-///             child: new Text('BUTTON'),
+///           return FlatButton(
+///             child: Text('BUTTON'),
 ///             onPressed: () {
 ///               // here, Scaffold.of(context) returns the locally created Scaffold
-///               Scaffold.of(context).showSnackBar(new SnackBar(
-///                 content: new Text('Hello.')
+///               Scaffold.of(context).showSnackBar(SnackBar(
+///                 content: Text('Hello.')
 ///               ));
 ///             }
 ///           );
diff --git a/packages/flutter/lib/src/widgets/gesture_detector.dart b/packages/flutter/lib/src/widgets/gesture_detector.dart
index 189e1fa..2e8268f 100644
--- a/packages/flutter/lib/src/widgets/gesture_detector.dart
+++ b/packages/flutter/lib/src/widgets/gesture_detector.dart
@@ -114,13 +114,13 @@
 /// `_lights` field:
 ///
 /// ```dart
-/// new GestureDetector(
+/// GestureDetector(
 ///   onTap: () {
 ///     setState(() { _lights = true; });
 ///   },
-///   child: new Container(
+///   child: Container(
 ///     color: Colors.yellow,
-///     child: new Text('TURN LIGHTS ON'),
+///     child: Text('TURN LIGHTS ON'),
 ///   ),
 /// )
 /// ```
@@ -450,10 +450,10 @@
 /// then displayed as the child of the gesture detector.
 ///
 /// ```dart
-/// new RawGestureDetector(
+/// RawGestureDetector(
 ///   gestures: <Type, GestureRecognizerFactory>{
-///     TapGestureRecognizer: new GestureRecognizerFactoryWithHandlers<TapGestureRecognizer>(
-///       () => new TapGestureRecognizer(),
+///     TapGestureRecognizer: GestureRecognizerFactoryWithHandlers<TapGestureRecognizer>(
+///       () => TapGestureRecognizer(),
 ///       (TapGestureRecognizer instance) {
 ///         instance
 ///           ..onTapDown = (TapDownDetails details) { setState(() { _last = 'down'; }); }
@@ -463,7 +463,7 @@
 ///       },
 ///     ),
 ///   },
-///   child: new Container(width: 300.0, height: 300.0, color: Colors.yellow, child: new Text(_last)),
+///   child: Container(width: 300.0, height: 300.0, color: Colors.yellow, child: Text(_last)),
 /// )
 /// ```
 ///
diff --git a/packages/flutter/lib/src/widgets/icon.dart b/packages/flutter/lib/src/widgets/icon.dart
index 03eed58..d876dba 100644
--- a/packages/flutter/lib/src/widgets/icon.dart
+++ b/packages/flutter/lib/src/widgets/icon.dart
@@ -79,7 +79,7 @@
   /// Typically, a material design color will be used, as follows:
   ///
   /// ```dart
-  ///  new Icon(
+  ///  Icon(
   ///    icon: Icons.widgets,
   ///    color: Colors.blue.shade400,
   ///  ),
diff --git a/packages/flutter/lib/src/widgets/image.dart b/packages/flutter/lib/src/widgets/image.dart
index f645b3e..dc9d74a 100644
--- a/packages/flutter/lib/src/widgets/image.dart
+++ b/packages/flutter/lib/src/widgets/image.dart
@@ -286,7 +286,7 @@
   /// render the `images/2x/cat.png` file:
   ///
   /// ```dart
-  /// new Image.asset('images/cat.png')
+  /// Image.asset('images/cat.png')
   /// ```
   ///
   /// This corresponds to the file that is in the project's `images/2x/`
@@ -311,7 +311,7 @@
   /// Then to display the image, use:
   ///
   /// ```dart
-  /// new Image.asset('icons/heart.png', package: 'my_icons')
+  /// Image.asset('icons/heart.png', package: 'my_icons')
   /// ```
   ///
   /// Assets used by the package itself should also be displayed using the
diff --git a/packages/flutter/lib/src/widgets/implicit_animations.dart b/packages/flutter/lib/src/widgets/implicit_animations.dart
index 7c86e4a..e1bbeec 100644
--- a/packages/flutter/lib/src/widgets/implicit_animations.dart
+++ b/packages/flutter/lib/src/widgets/implicit_animations.dart
@@ -1023,7 +1023,7 @@
 /// ```dart
 /// class LogoFade extends StatefulWidget {
 ///   @override
-///   createState() => new LogoFadeState();
+///   createState() => LogoFadeState();
 /// }
 ///
 /// class LogoFadeState extends State<LogoFade> {
@@ -1035,16 +1035,16 @@
 ///
 ///   @override
 ///   Widget build(BuildContext context) {
-///     return new Column(
+///     return Column(
 ///       mainAxisAlignment: MainAxisAlignment.center,
 ///       children: [
-///         new AnimatedOpacity(
+///         AnimatedOpacity(
 ///           opacity: opacityLevel,
-///           duration: new Duration(seconds: 3),
-///           child: new FlutterLogo(),
+///           duration: Duration(seconds: 3),
+///           child: FlutterLogo(),
 ///         ),
-///         new RaisedButton(
-///           child: new Text('Fade Logo'),
+///         RaisedButton(
+///           child: Text('Fade Logo'),
 ///           onPressed: _changeOpacity,
 ///         ),
 ///       ],
diff --git a/packages/flutter/lib/src/widgets/localizations.dart b/packages/flutter/lib/src/widgets/localizations.dart
index 81a1f87..ecebc52 100644
--- a/packages/flutter/lib/src/widgets/localizations.dart
+++ b/packages/flutter/lib/src/widgets/localizations.dart
@@ -309,7 +309,7 @@
 ///   static Future<MyLocalizations> load(Locale locale) {
 ///     return initializeMessages(locale.toString())
 ///       .then((Null _) {
-///         return new MyLocalizations(locale);
+///         return MyLocalizations(locale);
 ///       });
 ///   }
 ///
@@ -354,7 +354,7 @@
   ///
   /// ```dart
   /// Widget build(BuildContext context) {
-  ///   return new Localizations.override(
+  ///   return Localizations.override(
   ///     context: context,
   ///     locale: const Locale('en', 'US'),
   ///     child: myWidget,
diff --git a/packages/flutter/lib/src/widgets/navigator.dart b/packages/flutter/lib/src/widgets/navigator.dart
index 65798a4..b720bee 100644
--- a/packages/flutter/lib/src/widgets/navigator.dart
+++ b/packages/flutter/lib/src/widgets/navigator.dart
@@ -388,7 +388,7 @@
 ///
 /// ```dart
 /// void main() {
-///   runApp(new MaterialApp(home: new MyAppHome()));
+///   runApp(MaterialApp(home: MyAppHome()));
 /// }
 /// ```
 ///
@@ -397,13 +397,13 @@
 /// want to appear on the screen. For example:
 ///
 /// ```dart
-/// Navigator.push(context, new MaterialPageRoute<void>(
+/// Navigator.push(context, MaterialPageRoute<void>(
 ///   builder: (BuildContext context) {
-///     return new Scaffold(
-///       appBar: new AppBar(title: new Text('My Page')),
-///       body: new Center(
-///         child: new FlatButton(
-///           child: new Text('POP'),
+///     return Scaffold(
+///       appBar: AppBar(title: Text('My Page')),
+///       body: Center(
+///         child: FlatButton(
+///           child: Text('POP'),
 ///           onPressed: () {
 ///             Navigator.pop(context);
 ///           },
@@ -445,12 +445,12 @@
 ///
 /// ```dart
 /// void main() {
-///   runApp(new MaterialApp(
-///     home: new MyAppHome(), // becomes the route named '/'
+///   runApp(MaterialApp(
+///     home: MyAppHome(), // becomes the route named '/'
 ///     routes: <String, WidgetBuilder> {
-///       '/a': (BuildContext context) => new MyPage(title: 'page A'),
-///       '/b': (BuildContext context) => new MyPage(title: 'page B'),
-///       '/c': (BuildContext context) => new MyPage(title: 'page C'),
+///       '/a': (BuildContext context) => MyPage(title: 'page A'),
+///       '/b': (BuildContext context) => MyPage(title: 'page B'),
+///       '/c': (BuildContext context) => MyPage(title: 'page C'),
 ///     },
 ///   ));
 /// }
@@ -475,11 +475,11 @@
 /// operation we could `await` the result of [Navigator.push]:
 ///
 /// ```dart
-/// bool value = await Navigator.push(context, new MaterialPageRoute<bool>(
+/// bool value = await Navigator.push(context, MaterialPageRoute<bool>(
 ///   builder: (BuildContext context) {
-///     return new Center(
-///       child: new GestureDetector(
-///         child: new Text('OK'),
+///     return Center(
+///       child: GestureDetector(
+///         child: Text('OK'),
 ///         onTap: () { Navigator.pop(context, true); }
 ///       ),
 ///     );
@@ -527,16 +527,16 @@
 /// screen because it specifies `opaque: false`, just as a popup route does.
 ///
 /// ```dart
-/// Navigator.push(context, new PageRouteBuilder(
+/// Navigator.push(context, PageRouteBuilder(
 ///   opaque: false,
 ///   pageBuilder: (BuildContext context, _, __) {
-///     return new Center(child: new Text('My PageRoute'));
+///     return Center(child: Text('My PageRoute'));
 ///   },
 ///   transitionsBuilder: (___, Animation<double> animation, ____, Widget child) {
-///     return new FadeTransition(
+///     return FadeTransition(
 ///       opacity: animation,
-///       child: new RotationTransition(
-///         turns: new Tween<double>(begin: 0.5, end: 1.0).animate(animation),
+///       child: RotationTransition(
+///         turns: Tween<double>(begin: 0.5, end: 1.0).animate(animation),
 ///         child: child,
 ///       ),
 ///     );
@@ -588,13 +588,13 @@
 /// class MyApp extends StatelessWidget {
 ///  @override
 ///  Widget build(BuildContext context) {
-///    return new MaterialApp(
+///    return MaterialApp(
 ///      // ...some parameters omitted...
 ///      // MaterialApp contains our top-level Navigator
 ///      initialRoute: '/',
 ///      routes: {
-///        '/': (BuildContext context) => new HomePage(),
-///        '/signup': (BuildContext context) => new SignUpPage(),
+///        '/': (BuildContext context) => HomePage(),
+///        '/signup': (BuildContext context) => SignUpPage(),
 ///      },
 ///    );
 ///  }
@@ -605,7 +605,7 @@
 ///  Widget build(BuildContext context) {
 ///    // SignUpPage builds its own Navigator which ends up being a nested
 ///    // Navigator in our app.
-///    return new Navigator(
+///    return Navigator(
 ///      initialRoute: 'signup/personal_info',
 ///      onGenerateRoute: (RouteSettings settings) {
 ///        WidgetBuilder builder;
@@ -613,12 +613,12 @@
 ///          case 'signup/personal_info':
 ///            // Assume CollectPersonalInfoPage collects personal info and then
 ///            // navigates to 'signup/choose_credentials'.
-///            builder = (BuildContext _) => new CollectPersonalInfoPage();
+///            builder = (BuildContext _) => CollectPersonalInfoPage();
 ///            break;
 ///          case 'signup/choose_credentials':
 ///            // Assume ChooseCredentialsPage collects new credentials and then
 ///            // invokes 'onSignupComplete()'.
-///            builder = (BuildContext _) => new ChooseCredentialsPage(
+///            builder = (BuildContext _) => ChooseCredentialsPage(
 ///              onSignupComplete: () {
 ///                // Referencing Navigator.of(context) from here refers to the
 ///                // top level Navigator because SignUpPage is above the
@@ -630,9 +630,9 @@
 ///            );
 ///            break;
 ///          default:
-///            throw new Exception('Invalid route: ${settings.name}');
+///            throw Exception('Invalid route: ${settings.name}');
 ///        }
-///        return new MaterialPageRoute(builder: builder, settings: settings);
+///        return MaterialPageRoute(builder: builder, settings: settings);
 ///      },
 ///    );
 ///  }
@@ -901,7 +901,7 @@
   ///
   /// ```dart
   /// void _openMyPage() {
-  ///   Navigator.push(context, new MaterialPageRoute(builder: (BuildContext context) => new MyPage()));
+  ///   Navigator.push(context, MaterialPageRoute(builder: (BuildContext context) => MyPage()));
   /// }
   /// ```
   @optionalTypeArgs
@@ -944,7 +944,7 @@
   /// ```dart
   /// void _completeLogin() {
   ///   Navigator.pushReplacement(
-  ///       context, new MaterialPageRoute(builder: (BuildContext context) => new MyHomePage()));
+  ///       context, MaterialPageRoute(builder: (BuildContext context) => MyHomePage()));
   /// }
   /// ```
   @optionalTypeArgs
@@ -995,7 +995,7 @@
   /// void _finishAccountCreation() {
   ///   Navigator.pushAndRemoveUntil(
   ///     context,
-  ///     new MaterialPageRoute(builder: (BuildContext context) => new MyHomePage()),
+  ///     MaterialPageRoute(builder: (BuildContext context) => MyHomePage()),
   ///     ModalRoute.withName('/'),
   ///   );
   /// }
@@ -1523,7 +1523,7 @@
   ///
   /// ```dart
   /// void _openPage() {
-  ///   navigator.push(new MaterialPageRoute(builder: (BuildContext context) => new MyPage()));
+  ///   navigator.push(MaterialPageRoute(builder: (BuildContext context) => MyPage()));
   /// }
   /// ```
   @optionalTypeArgs
@@ -1562,7 +1562,7 @@
   /// ```dart
   /// void _doOpenPage() {
   ///   navigator.pushReplacement(
-  ///       new MaterialPageRoute(builder: (BuildContext context) => new MyHomePage()));
+  ///       MaterialPageRoute(builder: (BuildContext context) => MyHomePage()));
   /// }
   /// ```
   @optionalTypeArgs
@@ -1613,7 +1613,7 @@
   /// ```dart
   /// void _resetAndOpenPage() {
   ///   navigator.pushAndRemoveUntil(
-  ///     new MaterialPageRoute(builder: (BuildContext context) => new MyHomePage()),
+  ///     MaterialPageRoute(builder: (BuildContext context) => MyHomePage()),
   ///     ModalRoute.withName('/'),
   ///   );
   /// }
diff --git a/packages/flutter/lib/src/widgets/nested_scroll_view.dart b/packages/flutter/lib/src/widgets/nested_scroll_view.dart
index 3d93c16..3f373bb 100644
--- a/packages/flutter/lib/src/widgets/nested_scroll_view.dart
+++ b/packages/flutter/lib/src/widgets/nested_scroll_view.dart
@@ -75,13 +75,13 @@
 /// data model being represented.
 ///
 /// ```dart
-/// new DefaultTabController(
+/// DefaultTabController(
 ///   length: _tabs.length, // This is the number of tabs.
-///   child: new NestedScrollView(
+///   child: NestedScrollView(
 ///     headerSliverBuilder: (BuildContext context, bool innerBoxIsScrolled) {
 ///       // These are the slivers that show up in the "outer" scroll view.
 ///       return <Widget>[
-///         new SliverOverlapAbsorber(
+///         SliverOverlapAbsorber(
 ///           // This widget takes the overlapping behavior of the SliverAppBar,
 ///           // and redirects it to the SliverOverlapInjector below. If it is
 ///           // missing, then it is possible for the nested "inner" scroll view
@@ -90,7 +90,7 @@
 ///           // This is not necessary if the "headerSliverBuilder" only builds
 ///           // widgets that do not overlap the next sliver.
 ///           handle: NestedScrollView.sliverOverlapAbsorberHandleFor(context),
-///           child: new SliverAppBar(
+///           child: SliverAppBar(
 ///             title: const Text('Books'), // This is the title in the app bar.
 ///             pinned: true,
 ///             expandedHeight: 150.0,
@@ -103,26 +103,26 @@
 ///             // not actually aware of the precise position of the inner
 ///             // scroll views.
 ///             forceElevated: innerBoxIsScrolled,
-///             bottom: new TabBar(
+///             bottom: TabBar(
 ///               // These are the widgets to put in each tab in the tab bar.
-///               tabs: _tabs.map((String name) => new Tab(text: name)).toList(),
+///               tabs: _tabs.map((String name) => Tab(text: name)).toList(),
 ///             ),
 ///           ),
 ///         ),
 ///       ];
 ///     },
-///     body: new TabBarView(
+///     body: TabBarView(
 ///       // These are the contents of the tab views, below the tabs.
 ///       children: _tabs.map((String name) {
-///         return new SafeArea(
+///         return SafeArea(
 ///           top: false,
 ///           bottom: false,
-///           child: new Builder(
+///           child: Builder(
 ///             // This Builder is needed to provide a BuildContext that is "inside"
 ///             // the NestedScrollView, so that sliverOverlapAbsorberHandleFor() can
 ///             // find the NestedScrollView.
 ///             builder: (BuildContext context) {
-///               return new CustomScrollView(
+///               return CustomScrollView(
 ///                 // The "controller" and "primary" members should be left
 ///                 // unset, so that the NestedScrollView can control this
 ///                 // inner scroll view.
@@ -131,29 +131,29 @@
 ///                 // The PageStorageKey should be unique to this ScrollView;
 ///                 // it allows the list to remember its scroll position when
 ///                 // the tab view is not on the screen.
-///                 key: new PageStorageKey<String>(name),
+///                 key: PageStorageKey<String>(name),
 ///                 slivers: <Widget>[
-///                   new SliverOverlapInjector(
+///                   SliverOverlapInjector(
 ///                     // This is the flip side of the SliverOverlapAbsorber above.
 ///                     handle: NestedScrollView.sliverOverlapAbsorberHandleFor(context),
 ///                   ),
-///                   new SliverPadding(
+///                   SliverPadding(
 ///                     padding: const EdgeInsets.all(8.0),
 ///                     // In this example, the inner scroll view has
 ///                     // fixed-height list items, hence the use of
 ///                     // SliverFixedExtentList. However, one could use any
 ///                     // sliver widget here, e.g. SliverList or SliverGrid.
-///                     sliver: new SliverFixedExtentList(
+///                     sliver: SliverFixedExtentList(
 ///                       // The items in this example are fixed to 48 pixels
 ///                       // high. This matches the Material Design spec for
 ///                       // ListTile widgets.
 ///                       itemExtent: 48.0,
-///                       delegate: new SliverChildBuilderDelegate(
+///                       delegate: SliverChildBuilderDelegate(
 ///                         (BuildContext context, int index) {
 ///                           // This builder is called for each child.
 ///                           // In this example, we just number each list item.
-///                           return new ListTile(
-///                             title: new Text('Item $index'),
+///                           return ListTile(
+///                             title: Text('Item $index'),
 ///                           );
 ///                         },
 ///                         // The childCount of the SliverChildBuilderDelegate
diff --git a/packages/flutter/lib/src/widgets/page_storage.dart b/packages/flutter/lib/src/widgets/page_storage.dart
index 66058a6..ca5f331 100644
--- a/packages/flutter/lib/src/widgets/page_storage.dart
+++ b/packages/flutter/lib/src/widgets/page_storage.dart
@@ -22,10 +22,10 @@
 /// tabs' string labels.
 ///
 /// ```dart
-/// new TabBarView(
+/// TabBarView(
 ///   children: myTabs.map((Tab tab) {
-///     new MyScrollableTabView(
-///       key: new PageStorageKey<String>(tab.text), // like 'Tab 1'
+///     MyScrollableTabView(
+///       key: PageStorageKey<String>(tab.text), // like 'Tab 1'
 ///       tab: tab,
 ///    ),
 ///  }),
diff --git a/packages/flutter/lib/src/widgets/platform_view.dart b/packages/flutter/lib/src/widgets/platform_view.dart
index d52e539..800e880 100644
--- a/packages/flutter/lib/src/widgets/platform_view.dart
+++ b/packages/flutter/lib/src/widgets/platform_view.dart
@@ -37,7 +37,7 @@
 ///
 /// ```java
 ///   public static void registerWith(Registrar registrar) {
-///     registrar.platformViewRegistry().registerViewFactory("webview", new WebViewFactory(registrar.messenger()));
+///     registrar.platformViewRegistry().registerViewFactory("webview", WebViewFactory(registrar.messenger()));
 ///   }
 /// ```
 ///
diff --git a/packages/flutter/lib/src/widgets/routes.dart b/packages/flutter/lib/src/widgets/routes.dart
index ced0c30..cbfb815 100644
--- a/packages/flutter/lib/src/widgets/routes.dart
+++ b/packages/flutter/lib/src/widgets/routes.dart
@@ -341,11 +341,11 @@
   /// class App extends StatelessWidget {
   ///   @override
   ///   Widget build(BuildContext context) {
-  ///     return new MaterialApp(
+  ///     return MaterialApp(
   ///       initialRoute: '/',
   ///       routes: {
-  ///         '/': (BuildContext context) => new HomePage(),
-  ///         '/second_page': (BuildContext context) => new SecondPage(),
+  ///         '/': (BuildContext context) => HomePage(),
+  ///         '/second_page': (BuildContext context) => SecondPage(),
   ///       },
   ///     );
   ///   }
@@ -355,21 +355,21 @@
   ///   HomePage();
   ///
   ///   @override
-  ///   _HomePageState createState() => new _HomePageState();
+  ///   _HomePageState createState() => _HomePageState();
   /// }
   ///
   /// class _HomePageState extends State<HomePage> {
   ///   @override
   ///   Widget build(BuildContext context) {
-  ///     return new Scaffold(
-  ///       body: new Center(
+  ///     return Scaffold(
+  ///       body: Center(
   ///         child: Column(
   ///           mainAxisSize: MainAxisSize.min,
   ///           children: <Widget>[
-  ///             new Text('HomePage'),
+  ///             Text('HomePage'),
   ///             // Press this button to open the SecondPage.
-  ///             new RaisedButton(
-  ///               child: new Text('Second Page >'),
+  ///             RaisedButton(
+  ///               child: Text('Second Page >'),
   ///               onPressed: () {
   ///                 Navigator.pushNamed(context, '/second_page');
   ///               },
@@ -383,7 +383,7 @@
   ///
   /// class SecondPage extends StatefulWidget {
   ///   @override
-  ///   _SecondPageState createState() => new _SecondPageState();
+  ///   _SecondPageState createState() => _SecondPageState();
   /// }
   ///
   /// class _SecondPageState extends State<SecondPage> {
@@ -396,7 +396,7 @@
   ///     // rectangle.
   ///     setState(() => _showRectangle = true);
   ///     ModalRoute.of(context).addLocalHistoryEntry(
-  ///         new LocalHistoryEntry(
+  ///         LocalHistoryEntry(
   ///             onRemove: () {
   ///               // Hide the red rectangle.
   ///               setState(() => _showRectangle = false);
@@ -408,24 +408,24 @@
   ///   @override
   ///   Widget build(BuildContext context) {
   ///     final localNavContent = _showRectangle
-  ///       ? new Container(
+  ///       ? Container(
   ///           width: 100.0,
   ///           height: 100.0,
   ///           color: Colors.red,
   ///         )
-  ///       : new RaisedButton(
-  ///           child: new Text('Show Rectangle'),
+  ///       : RaisedButton(
+  ///           child: Text('Show Rectangle'),
   ///           onPressed: _navigateLocallyToShowRectangle,
   ///         );
   ///
-  ///     return new Scaffold(
+  ///     return Scaffold(
   ///       body: Center(
-  ///         child: new Column(
+  ///         child: Column(
   ///           mainAxisAlignment: MainAxisAlignment.center,
   ///           children: <Widget>[
   ///             localNavContent,
-  ///             new RaisedButton(
-  ///               child: new Text('< Back'),
+  ///             RaisedButton(
+  ///               child: Text('< Back'),
   ///               onPressed: () {
   ///                 // Pop a route. If this is pressed while the red rectangle is
   ///                 // visible then it will will pop our local history entry, which
@@ -751,16 +751,16 @@
   /// route from the top of the screen back to the bottom.
   ///
   /// ```dart
-  /// new PageRouteBuilder(
+  /// PageRouteBuilder(
   ///   pageBuilder: (BuildContext context,
   ///       Animation<double> animation,
   ///       Animation<double> secondaryAnimation,
   ///       Widget child,
   ///   ) {
-  ///     return new Scaffold(
-  ///       appBar: new AppBar(title: new Text('Hello')),
-  ///       body: new Center(
-  ///         child: new Text('Hello World'),
+  ///     return Scaffold(
+  ///       appBar: AppBar(title: Text('Hello')),
+  ///       body: Center(
+  ///         child: Text('Hello World'),
   ///       ),
   ///     );
   ///   },
@@ -770,8 +770,8 @@
   ///       Animation<double> secondaryAnimation,
   ///       Widget child,
   ///    ) {
-  ///     return new SlideTransition(
-  ///       position: new Tween<Offset>(
+  ///     return SlideTransition(
+  ///       position: Tween<Offset>(
   ///         begin: const Offset(0.0, 1.0),
   ///         end: Offset.zero,
   ///       ).animate(animation),
@@ -807,13 +807,13 @@
   ///       Animation<double> secondaryAnimation,
   ///       Widget child,
   ///   ) {
-  ///     return new SlideTransition(
-  ///       position: new AlignmentTween(
+  ///     return SlideTransition(
+  ///       position: AlignmentTween(
   ///         begin: const Offset(0.0, 1.0),
   ///         end: Offset.zero,
   ///       ).animate(animation),
-  ///       child: new SlideTransition(
-  ///         position: new TweenOffset(
+  ///       child: SlideTransition(
+  ///         position: TweenOffset(
   ///           begin: Offset.zero,
   ///           end: const Offset(0.0, 1.0),
   ///         ).animate(secondaryAnimation),
@@ -1049,7 +1049,7 @@
   ///
   /// ```dart
   /// Widget build(BuildContext context) {
-  ///   return new WillPopScope(
+  ///   return WillPopScope(
   ///     onWillPop: askTheUserIfTheyAreSure,
   ///     child: ...,
   ///   );
@@ -1271,16 +1271,16 @@
 ///
 /// ```dart
 /// // Register the RouteObserver as a navigation observer.
-/// final RouteObserver<PageRoute> routeObserver = new RouteObserver<PageRoute>();
+/// final RouteObserver<PageRoute> routeObserver = RouteObserver<PageRoute>();
 /// void main() {
-///   runApp(new MaterialApp(
-///     home: new Container(),
+///   runApp(MaterialApp(
+///     home: Container(),
 ///     navigatorObservers: [routeObserver],
 ///   ));
 /// }
 ///
 /// class RouteAwareWidget extends StatefulWidget {
-///   State<RouteAwareWidget> createState() => new RouteAwareWidgetState();
+///   State<RouteAwareWidget> createState() => RouteAwareWidgetState();
 /// }
 ///
 /// // Implement RouteAware in a widget's state and subscribe it to the RouteObserver.
@@ -1309,7 +1309,7 @@
 ///   }
 ///
 ///   @override
-///   Widget build(BuildContext context) => new Container();
+///   Widget build(BuildContext context) => Container();
 ///
 /// }
 /// ```
diff --git a/packages/flutter/lib/src/widgets/scroll_controller.dart b/packages/flutter/lib/src/widgets/scroll_controller.dart
index d87ab68..a20aa60 100644
--- a/packages/flutter/lib/src/widgets/scroll_controller.dart
+++ b/packages/flutter/lib/src/widgets/scroll_controller.dart
@@ -291,19 +291,19 @@
 /// the different list lengths.
 ///
 /// ```dart
-/// new PageView(
+/// PageView(
 ///   children: <Widget>[
-///     new ListView(
+///     ListView(
 ///       controller: _trackingScrollController,
-///       children: new List<Widget>.generate(100, (int i) => new Text('page 0 item $i')).toList(),
+///       children: List<Widget>.generate(100, (int i) => Text('page 0 item $i')).toList(),
 ///     ),
-///    new ListView(
+///    ListView(
 ///      controller: _trackingScrollController,
-///      children: new List<Widget>.generate(200, (int i) => new Text('page 1 item $i')).toList(),
+///      children: List<Widget>.generate(200, (int i) => Text('page 1 item $i')).toList(),
 ///    ),
-///    new ListView(
+///    ListView(
 ///      controller: _trackingScrollController,
-///      children: new List<Widget>.generate(300, (int i) => new Text('page 2 item $i')).toList(),
+///      children: List<Widget>.generate(300, (int i) => Text('page 2 item $i')).toList(),
 ///     ),
 ///   ],
 /// )
diff --git a/packages/flutter/lib/src/widgets/scroll_physics.dart b/packages/flutter/lib/src/widgets/scroll_physics.dart
index d009205..8ba89fc 100644
--- a/packages/flutter/lib/src/widgets/scroll_physics.dart
+++ b/packages/flutter/lib/src/widgets/scroll_physics.dart
@@ -43,7 +43,7 @@
   /// This method is typically used to define [applyTo] methods like:
   /// ```dart
   /// FooScrollPhysics applyTo(ScrollPhysics ancestor) {
-  ///   return new FooScrollPhysics(parent: buildParent(ancestor));
+  ///   return FooScrollPhysics(parent: buildParent(ancestor));
   /// }
   /// ```
   @protected
diff --git a/packages/flutter/lib/src/widgets/scroll_view.dart b/packages/flutter/lib/src/widgets/scroll_view.dart
index 3d60758..f73af56 100644
--- a/packages/flutter/lib/src/widgets/scroll_view.dart
+++ b/packages/flutter/lib/src/widgets/scroll_view.dart
@@ -274,7 +274,7 @@
 /// bar, a grid, and an infinite list.
 ///
 /// ```dart
-/// new CustomScrollView(
+/// CustomScrollView(
 ///   slivers: <Widget>[
 ///     const SliverAppBar(
 ///       pinned: true,
@@ -283,32 +283,32 @@
 ///         title: Text('Demo'),
 ///       ),
 ///     ),
-///     new SliverGrid(
-///       gridDelegate: new SliverGridDelegateWithMaxCrossAxisExtent(
+///     SliverGrid(
+///       gridDelegate: SliverGridDelegateWithMaxCrossAxisExtent(
 ///         maxCrossAxisExtent: 200.0,
 ///         mainAxisSpacing: 10.0,
 ///         crossAxisSpacing: 10.0,
 ///         childAspectRatio: 4.0,
 ///       ),
-///       delegate: new SliverChildBuilderDelegate(
+///       delegate: SliverChildBuilderDelegate(
 ///         (BuildContext context, int index) {
-///           return new Container(
+///           return Container(
 ///             alignment: Alignment.center,
 ///             color: Colors.teal[100 * (index % 9)],
-///             child: new Text('grid item $index'),
+///             child: Text('grid item $index'),
 ///           );
 ///         },
 ///         childCount: 20,
 ///       ),
 ///     ),
-///     new SliverFixedExtentList(
+///     SliverFixedExtentList(
 ///       itemExtent: 50.0,
-///       delegate: new SliverChildBuilderDelegate(
+///       delegate: SliverChildBuilderDelegate(
 ///         (BuildContext context, int index) {
-///           return new Container(
+///           return Container(
 ///             alignment: Alignment.center,
 ///             color: Colors.lightBlue[100 * (index % 9)],
-///             child: new Text('list item $index'),
+///             child: Text('list item $index'),
 ///           );
 ///         },
 ///       ),
@@ -488,11 +488,11 @@
 /// An infinite list of children:
 ///
 /// ```dart
-/// new ListView.builder(
-///   padding: new EdgeInsets.all(8.0),
+/// ListView.builder(
+///   padding: EdgeInsets.all(8.0),
 ///   itemExtent: 20.0,
 ///   itemBuilder: (BuildContext context, int index) {
-///     return new Text('entry $index');
+///     return Text('entry $index');
 ///   },
 /// )
 /// ```
@@ -598,7 +598,7 @@
 /// [CustomScrollView]:
 ///
 /// ```dart
-/// new ListView(
+/// ListView(
 ///   shrinkWrap: true,
 ///   padding: const EdgeInsets.all(20.0),
 ///   children: <Widget>[
@@ -611,13 +611,13 @@
 /// ```
 ///
 /// ```dart
-/// new CustomScrollView(
+/// CustomScrollView(
 ///   shrinkWrap: true,
 ///   slivers: <Widget>[
-///     new SliverPadding(
+///     SliverPadding(
 ///       padding: const EdgeInsets.all(20.0),
-///       sliver: new SliverList(
-///         delegate: new SliverChildListDelegate(
+///       sliver: SliverList(
+///         delegate: SliverChildListDelegate(
 ///           <Widget>[
 ///             const Text('I\'m dedicating every day to you'),
 ///             const Text('Domestic life was never quite my style'),
@@ -774,12 +774,12 @@
   /// are separated by [Divider]s.
   ///
   /// ```dart
-  /// new ListView.separated(
+  /// ListView.separated(
   ///   itemCount: 25,
-  ///   separatorBuilder: (BuildContext context, int index) => new Divider(),
+  ///   separatorBuilder: (BuildContext context, int index) => Divider(),
   ///   itemBuilder: (BuildContext context, int index) {
-  ///     return new ListTile(
-  ///       title: new Text('item $index'),
+  ///     return ListTile(
+  ///       title: Text('item $index'),
   ///     );
   ///   },
   /// )
@@ -970,7 +970,7 @@
 /// [CustomScrollView]:
 ///
 /// ```dart
-/// new GridView.count(
+/// GridView.count(
 ///   primary: false,
 ///   padding: const EdgeInsets.all(20.0),
 ///   crossAxisSpacing: 10.0,
@@ -987,12 +987,12 @@
 /// ```
 ///
 /// ```dart
-/// new CustomScrollView(
+/// CustomScrollView(
 ///   primary: false,
 ///   slivers: <Widget>[
-///     new SliverPadding(
+///     SliverPadding(
 ///       padding: const EdgeInsets.all(20.0),
-///       sliver: new SliverGrid.count(
+///       sliver: SliverGrid.count(
 ///         crossAxisSpacing: 10.0,
 ///         crossAxisCount: 2,
 ///         children: <Widget>[
diff --git a/packages/flutter/lib/src/widgets/single_child_scroll_view.dart b/packages/flutter/lib/src/widgets/single_child_scroll_view.dart
index 4e64d34..f7f614a 100644
--- a/packages/flutter/lib/src/widgets/single_child_scroll_view.dart
+++ b/packages/flutter/lib/src/widgets/single_child_scroll_view.dart
@@ -83,23 +83,23 @@
 /// more room, in which case they stack vertically and scroll.
 ///
 /// ```dart
-/// new LayoutBuilder(
+/// LayoutBuilder(
 ///   builder: (BuildContext context, BoxConstraints viewportConstraints) {
 ///     return SingleChildScrollView(
-///       child: new ConstrainedBox(
-///         constraints: new BoxConstraints(
+///       child: ConstrainedBox(
+///         constraints: BoxConstraints(
 ///           minHeight: viewportConstraints.maxHeight,
 ///         ),
-///         child: new Column(
+///         child: Column(
 ///           mainAxisSize: MainAxisSize.min,
 ///           mainAxisAlignment: MainAxisAlignment.spaceAround,
 ///           children: <Widget>[
-///             new Container(
+///             Container(
 ///               // A fixed-height child.
 ///               color: Colors.yellow,
 ///               height: 120.0,
 ///             ),
-///             new Container(
+///             Container(
 ///               // Another fixed-height child.
 ///               color: Colors.green,
 ///               height: 120.0,
@@ -135,25 +135,25 @@
 /// in an [Expanded] widget.
 ///
 /// ```dart
-/// new LayoutBuilder(
+/// LayoutBuilder(
 ///   builder: (BuildContext context, BoxConstraints viewportConstraints) {
 ///     return SingleChildScrollView(
-///       child: new ConstrainedBox(
-///         constraints: new BoxConstraints(
+///       child: ConstrainedBox(
+///         constraints: BoxConstraints(
 ///           minHeight: viewportConstraints.maxHeight,
 ///         ),
-///         child: new IntrinsicHeight(
-///           child: new Column(
+///         child: IntrinsicHeight(
+///           child: Column(
 ///             children: <Widget>[
-///               new Container(
+///               Container(
 ///                 // A fixed-height child.
 ///                 color: Colors.yellow,
 ///                 height: 120.0,
 ///               ),
-///               new Expanded(
+///               Expanded(
 ///                 // A flexible child that will grow to fit the viewport but
 ///                 // still be at least as big as necessary to fit its contents.
-///                 child: new Container(
+///                 child: Container(
 ///                   color: Colors.blue,
 ///                   height: 120.0,
 ///                 ),
diff --git a/packages/flutter/lib/src/widgets/sliver.dart b/packages/flutter/lib/src/widgets/sliver.dart
index 95bc33f..ae5a61b 100644
--- a/packages/flutter/lib/src/widgets/sliver.dart
+++ b/packages/flutter/lib/src/widgets/sliver.dart
@@ -486,14 +486,14 @@
 /// list, shows an infinite number of items in varying shades of blue:
 ///
 /// ```dart
-/// new SliverFixedExtentList(
+/// SliverFixedExtentList(
 ///   itemExtent: 50.0,
-///   delegate: new SliverChildBuilderDelegate(
+///   delegate: SliverChildBuilderDelegate(
 ///     (BuildContext context, int index) {
-///       return new Container(
+///       return Container(
 ///         alignment: Alignment.center,
 ///         color: Colors.lightBlue[100 * (index % 9)],
-///         child: new Text('list item $index'),
+///         child: Text('list item $index'),
 ///       );
 ///     },
 ///   ),
@@ -550,19 +550,19 @@
 /// list, shows twenty boxes in a pretty teal grid:
 ///
 /// ```dart
-/// new SliverGrid(
-///   gridDelegate: new SliverGridDelegateWithMaxCrossAxisExtent(
+/// SliverGrid(
+///   gridDelegate: SliverGridDelegateWithMaxCrossAxisExtent(
 ///     maxCrossAxisExtent: 200.0,
 ///     mainAxisSpacing: 10.0,
 ///     crossAxisSpacing: 10.0,
 ///     childAspectRatio: 4.0,
 ///   ),
-///   delegate: new SliverChildBuilderDelegate(
+///   delegate: SliverChildBuilderDelegate(
 ///     (BuildContext context, int index) {
-///       return new Container(
+///       return Container(
 ///         alignment: Alignment.center,
 ///         color: Colors.teal[100 * (index % 9)],
-///         child: new Text('grid item $index'),
+///         child: Text('grid item $index'),
 ///       );
 ///     },
 ///     childCount: 20,
diff --git a/packages/flutter/lib/src/widgets/spacer.dart b/packages/flutter/lib/src/widgets/spacer.dart
index 7a4de12..6c64009 100644
--- a/packages/flutter/lib/src/widgets/spacer.dart
+++ b/packages/flutter/lib/src/widgets/spacer.dart
@@ -20,14 +20,14 @@
 /// ## Sample code
 ///
 /// ```dart
-/// new Row(
+/// Row(
 ///   children: <Widget>[
-///     new Text('Begin'),
-///     new Spacer(), // Defaults to a flex of one.
-///     new Text('Middle'),
+///     Text('Begin'),
+///     Spacer(), // Defaults to a flex of one.
+///     Text('Middle'),
 ///     // Gives twice the space between Middle and End than Begin and Middle.
-///     new Spacer(flex: 2),
-///     new Text('End'),
+///     Spacer(flex: 2),
+///     Text('End'),
 ///   ],
 /// )
 /// ```
diff --git a/packages/flutter/lib/src/widgets/text.dart b/packages/flutter/lib/src/widgets/text.dart
index 0a22590..77632fb 100644
--- a/packages/flutter/lib/src/widgets/text.dart
+++ b/packages/flutter/lib/src/widgets/text.dart
@@ -167,11 +167,11 @@
 /// ## Sample code
 ///
 /// ```dart
-/// new Text(
+/// Text(
 ///   'Hello, $_name! How are you?',
 ///   textAlign: TextAlign.center,
 ///   overflow: TextOverflow.ellipsis,
-///   style: new TextStyle(fontWeight: FontWeight.bold),
+///   style: TextStyle(fontWeight: FontWeight.bold),
 /// )
 /// ```
 ///
@@ -331,7 +331,7 @@
   /// text value:
   ///
   /// ```dart
-  /// new Text(r'$$', semanticsLabel: 'Double dollars')
+  /// Text(r'$$', semanticsLabel: 'Double dollars')
   ///
   /// ```
   final String semanticsLabel;
diff --git a/packages/flutter/lib/src/widgets/transitions.dart b/packages/flutter/lib/src/widgets/transitions.dart
index 66f5947..8b0bd7e 100644
--- a/packages/flutter/lib/src/widgets/transitions.dart
+++ b/packages/flutter/lib/src/widgets/transitions.dart
@@ -761,7 +761,7 @@
 /// ```dart
 /// class Spinner extends StatefulWidget {
 ///   @override
-///   _SpinnerState createState() => new _SpinnerState();
+///   _SpinnerState createState() => _SpinnerState();
 /// }
 ///
 /// class _SpinnerState extends State<Spinner> with SingleTickerProviderStateMixin {
@@ -770,7 +770,7 @@
 ///   @override
 ///   void initState() {
 ///     super.initState();
-///     _controller = new AnimationController(
+///     _controller = AnimationController(
 ///       duration: const Duration(seconds: 10),
 ///       vsync: this,
 ///     )..repeat();
@@ -784,11 +784,11 @@
 ///
 ///   @override
 ///   Widget build(BuildContext context) {
-///     return new AnimatedBuilder(
+///     return AnimatedBuilder(
 ///       animation: _controller,
-///       child: new Container(width: 200.0, height: 200.0, color: Colors.green),
+///       child: Container(width: 200.0, height: 200.0, color: Colors.green),
 ///       builder: (BuildContext context, Widget child) {
-///         return new Transform.rotate(
+///         return Transform.rotate(
 ///           angle: _controller.value * 2.0 * math.pi,
 ///           child: child,
 ///         );
diff --git a/packages/flutter/test/rendering/recording_canvas.dart b/packages/flutter/test/rendering/recording_canvas.dart
index edc0eee..0e04296 100644
--- a/packages/flutter/test/rendering/recording_canvas.dart
+++ b/packages/flutter/test/rendering/recording_canvas.dart
@@ -43,8 +43,8 @@
 ///
 /// ```dart
 /// RenderBox box = tester.renderObject(find.text('ABC'));
-/// TestRecordingCanvas canvas = new TestRecordingCanvas();
-/// TestRecordingPaintingContext context = new TestRecordingPaintingContext(canvas);
+/// TestRecordingCanvas canvas = TestRecordingCanvas();
+/// TestRecordingPaintingContext context = TestRecordingPaintingContext(canvas);
 /// box.paint(context, Offset.zero);
 /// // Now test the expected canvas.invocations.
 /// ```
diff --git a/packages/flutter/test/widgets/semantics_tester.dart b/packages/flutter/test/widgets/semantics_tester.dart
index 84af7eb..1fa0fb8 100644
--- a/packages/flutter/test/widgets/semantics_tester.dart
+++ b/packages/flutter/test/widgets/semantics_tester.dart
@@ -451,8 +451,8 @@
   ///
   /// ```dart
   /// testWidgets('generate code for MyWidget', (WidgetTester tester) async {
-  ///   var semantics = new SemanticsTester(tester);
-  ///   await tester.pumpWidget(new MyWidget());
+  ///   var semantics = SemanticsTester(tester);
+  ///   await tester.pumpWidget(MyWidget());
   ///   print(semantics.generateTestSemanticsExpressionForCurrentSemanticsTree());
   ///   semantics.dispose();
   /// });
@@ -462,11 +462,11 @@
   ///
   /// ```dart
   /// testWidgets('generate code for MyWidget', (WidgetTester tester) async {
-  ///   var semantics = new SemanticsTester(tester);
-  ///   await tester.pumpWidget(new MyWidget());
+  ///   var semantics = SemanticsTester(tester);
+  ///   await tester.pumpWidget(MyWidget());
   ///   expect(semantics, hasSemantics(
   ///     // Generated code:
-  ///     new TestSemantics(
+  ///     TestSemantics(
   ///       ... properties and child nodes ...
   ///     ),
   ///     ignoreRect: true,