Remove "unnecessary" imports. (#73344)
diff --git a/packages/flutter/lib/src/widgets/animated_list.dart b/packages/flutter/lib/src/widgets/animated_list.dart
index 0a982e8..ec7c861 100644
--- a/packages/flutter/lib/src/widgets/animated_list.dart
+++ b/packages/flutter/lib/src/widgets/animated_list.dart
@@ -2,7 +2,6 @@
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
-import 'package:flutter/animation.dart';
import 'package:flutter/foundation.dart';
import 'basic.dart';
diff --git a/packages/flutter/lib/src/widgets/animated_switcher.dart b/packages/flutter/lib/src/widgets/animated_switcher.dart
index 687c8e7..f3ded78 100644
--- a/packages/flutter/lib/src/widgets/animated_switcher.dart
+++ b/packages/flutter/lib/src/widgets/animated_switcher.dart
@@ -2,7 +2,6 @@
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
-import 'package:flutter/animation.dart';
import 'package:flutter/foundation.dart';
import 'basic.dart';
diff --git a/packages/flutter/lib/src/widgets/annotated_region.dart b/packages/flutter/lib/src/widgets/annotated_region.dart
index ee257ef..d5d5aff 100644
--- a/packages/flutter/lib/src/widgets/annotated_region.dart
+++ b/packages/flutter/lib/src/widgets/annotated_region.dart
@@ -2,7 +2,6 @@
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
-import 'package:flutter/foundation.dart';
import 'package:flutter/rendering.dart';
import 'framework.dart';
diff --git a/packages/flutter/lib/src/widgets/autocomplete.dart b/packages/flutter/lib/src/widgets/autocomplete.dart
index ecaf750..739cb7f 100644
--- a/packages/flutter/lib/src/widgets/autocomplete.dart
+++ b/packages/flutter/lib/src/widgets/autocomplete.dart
@@ -2,7 +2,6 @@
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
-import 'package:flutter/foundation.dart';
import 'package:flutter/scheduler.dart';
import 'basic.dart';
diff --git a/packages/flutter/lib/src/widgets/banner.dart b/packages/flutter/lib/src/widgets/banner.dart
index 6ab57d1..8c93969 100644
--- a/packages/flutter/lib/src/widgets/banner.dart
+++ b/packages/flutter/lib/src/widgets/banner.dart
@@ -5,7 +5,6 @@
import 'dart:math' as math;
import 'package:flutter/foundation.dart';
-import 'package:flutter/painting.dart';
import 'basic.dart';
import 'debug.dart';
diff --git a/packages/flutter/lib/src/widgets/color_filter.dart b/packages/flutter/lib/src/widgets/color_filter.dart
index 504e69d..cbfeee0 100644
--- a/packages/flutter/lib/src/widgets/color_filter.dart
+++ b/packages/flutter/lib/src/widgets/color_filter.dart
@@ -2,8 +2,6 @@
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
-import 'dart:ui';
-
import 'package:flutter/foundation.dart';
import 'package:flutter/rendering.dart';
diff --git a/packages/flutter/lib/src/widgets/container.dart b/packages/flutter/lib/src/widgets/container.dart
index 852ff33..197cc97 100644
--- a/packages/flutter/lib/src/widgets/container.dart
+++ b/packages/flutter/lib/src/widgets/container.dart
@@ -3,7 +3,6 @@
// found in the LICENSE file.
import 'package:flutter/foundation.dart';
-import 'package:flutter/painting.dart';
import 'package:flutter/rendering.dart';
import 'basic.dart';
diff --git a/packages/flutter/lib/src/widgets/editable_text.dart b/packages/flutter/lib/src/widgets/editable_text.dart
index 2dc8a62..7e374eb 100644
--- a/packages/flutter/lib/src/widgets/editable_text.dart
+++ b/packages/flutter/lib/src/widgets/editable_text.dart
@@ -8,7 +8,6 @@
import 'package:flutter/foundation.dart';
import 'package:flutter/gestures.dart' show DragStartBehavior;
-import 'package:flutter/painting.dart';
import 'package:flutter/rendering.dart';
import 'package:flutter/scheduler.dart';
import 'package:flutter/services.dart';
diff --git a/packages/flutter/lib/src/widgets/focus_traversal.dart b/packages/flutter/lib/src/widgets/focus_traversal.dart
index 81368b6..5d40de3 100644
--- a/packages/flutter/lib/src/widgets/focus_traversal.dart
+++ b/packages/flutter/lib/src/widgets/focus_traversal.dart
@@ -2,10 +2,7 @@
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
-import 'dart:ui';
-
import 'package:flutter/foundation.dart';
-import 'package:flutter/painting.dart';
import 'actions.dart';
import 'basic.dart';
diff --git a/packages/flutter/lib/src/widgets/grid_paper.dart b/packages/flutter/lib/src/widgets/grid_paper.dart
index 2d30753..73a62d0 100644
--- a/packages/flutter/lib/src/widgets/grid_paper.dart
+++ b/packages/flutter/lib/src/widgets/grid_paper.dart
@@ -2,8 +2,6 @@
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
-import 'package:flutter/rendering.dart';
-
import 'basic.dart';
import 'framework.dart';
diff --git a/packages/flutter/lib/src/widgets/icon_theme_data.dart b/packages/flutter/lib/src/widgets/icon_theme_data.dart
index 91af55d..1626b1a 100644
--- a/packages/flutter/lib/src/widgets/icon_theme_data.dart
+++ b/packages/flutter/lib/src/widgets/icon_theme_data.dart
@@ -2,7 +2,6 @@
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
-import 'dart:ui' show Color, hashValues;
import 'dart:ui' as ui show lerpDouble;
import 'package:flutter/foundation.dart';
diff --git a/packages/flutter/lib/src/widgets/image.dart b/packages/flutter/lib/src/widgets/image.dart
index 4053226..378c11b 100644
--- a/packages/flutter/lib/src/widgets/image.dart
+++ b/packages/flutter/lib/src/widgets/image.dart
@@ -7,7 +7,6 @@
import 'dart:typed_data';
import 'package:flutter/foundation.dart';
-import 'package:flutter/painting.dart';
import 'package:flutter/scheduler.dart';
import 'package:flutter/services.dart';
import 'package:flutter/semantics.dart';
diff --git a/packages/flutter/lib/src/widgets/implicit_animations.dart b/packages/flutter/lib/src/widgets/implicit_animations.dart
index 20a729b..7fc1371 100644
--- a/packages/flutter/lib/src/widgets/implicit_animations.dart
+++ b/packages/flutter/lib/src/widgets/implicit_animations.dart
@@ -4,9 +4,7 @@
import 'dart:ui' as ui show TextHeightBehavior;
-import 'package:flutter/animation.dart';
import 'package:flutter/foundation.dart';
-import 'package:flutter/painting.dart';
import 'package:flutter/rendering.dart';
import 'package:vector_math/vector_math_64.dart';
diff --git a/packages/flutter/lib/src/widgets/inherited_model.dart b/packages/flutter/lib/src/widgets/inherited_model.dart
index 241d756..c9e92ac 100644
--- a/packages/flutter/lib/src/widgets/inherited_model.dart
+++ b/packages/flutter/lib/src/widgets/inherited_model.dart
@@ -4,8 +4,6 @@
import 'dart:collection';
-import 'package:flutter/foundation.dart';
-
import 'framework.dart';
/// An [InheritedWidget] that's intended to be used as the base class for
diff --git a/packages/flutter/lib/src/widgets/inherited_theme.dart b/packages/flutter/lib/src/widgets/inherited_theme.dart
index 7571c08..f6c0b08 100644
--- a/packages/flutter/lib/src/widgets/inherited_theme.dart
+++ b/packages/flutter/lib/src/widgets/inherited_theme.dart
@@ -2,8 +2,6 @@
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
-import 'package:flutter/foundation.dart';
-
import 'framework.dart';
/// An [InheritedWidget] that defines visual properties like colors
diff --git a/packages/flutter/lib/src/widgets/list_wheel_scroll_view.dart b/packages/flutter/lib/src/widgets/list_wheel_scroll_view.dart
index 2e63f44..f0c3e14 100644
--- a/packages/flutter/lib/src/widgets/list_wheel_scroll_view.dart
+++ b/packages/flutter/lib/src/widgets/list_wheel_scroll_view.dart
@@ -5,7 +5,6 @@
import 'dart:collection';
import 'dart:math' as math;
-import 'package:flutter/animation.dart';
import 'package:flutter/physics.dart';
import 'package:flutter/rendering.dart';
import 'package:flutter/scheduler.dart';
diff --git a/packages/flutter/lib/src/widgets/localizations.dart b/packages/flutter/lib/src/widgets/localizations.dart
index 91b1834..f4da872 100644
--- a/packages/flutter/lib/src/widgets/localizations.dart
+++ b/packages/flutter/lib/src/widgets/localizations.dart
@@ -2,13 +2,10 @@
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
-import 'dart:ui' show Locale;
-
import 'package:flutter/foundation.dart';
import 'package:flutter/rendering.dart';
import 'basic.dart';
-import 'binding.dart';
import 'container.dart';
import 'debug.dart';
import 'framework.dart';
diff --git a/packages/flutter/lib/src/widgets/navigation_toolbar.dart b/packages/flutter/lib/src/widgets/navigation_toolbar.dart
index 4aaba50..e2b398a 100644
--- a/packages/flutter/lib/src/widgets/navigation_toolbar.dart
+++ b/packages/flutter/lib/src/widgets/navigation_toolbar.dart
@@ -4,8 +4,6 @@
import 'dart:math' as math;
-import 'package:flutter/rendering.dart';
-
import 'basic.dart';
import 'debug.dart';
import 'framework.dart';
diff --git a/packages/flutter/lib/src/widgets/nested_scroll_view.dart b/packages/flutter/lib/src/widgets/nested_scroll_view.dart
index f1d77da..c0c0593 100644
--- a/packages/flutter/lib/src/widgets/nested_scroll_view.dart
+++ b/packages/flutter/lib/src/widgets/nested_scroll_view.dart
@@ -6,11 +6,8 @@
import 'package:flutter/foundation.dart';
import 'package:flutter/gestures.dart';
-import 'package:flutter/painting.dart';
-import 'package:flutter/physics.dart';
import 'package:flutter/rendering.dart';
import 'package:flutter/scheduler.dart';
-import 'package:flutter/gestures.dart' show DragStartBehavior;
import 'basic.dart';
import 'framework.dart';
@@ -23,7 +20,6 @@
import 'scroll_position.dart';
import 'scroll_view.dart';
import 'sliver_fill.dart';
-import 'ticker_provider.dart';
import 'viewport.dart';
// Examples can assume:
diff --git a/packages/flutter/lib/src/widgets/overflow_bar.dart b/packages/flutter/lib/src/widgets/overflow_bar.dart
index fd45105..a6dc14b 100644
--- a/packages/flutter/lib/src/widgets/overflow_bar.dart
+++ b/packages/flutter/lib/src/widgets/overflow_bar.dart
@@ -5,7 +5,6 @@
import 'dart:math' as math;
import 'package:flutter/foundation.dart';
-import 'package:flutter/gestures.dart';
import 'package:flutter/rendering.dart';
import 'basic.dart';
diff --git a/packages/flutter/lib/src/widgets/overscroll_indicator.dart b/packages/flutter/lib/src/widgets/overscroll_indicator.dart
index b452f09..e612803 100644
--- a/packages/flutter/lib/src/widgets/overscroll_indicator.dart
+++ b/packages/flutter/lib/src/widgets/overscroll_indicator.dart
@@ -5,7 +5,6 @@
import 'dart:async' show Timer;
import 'dart:math' as math;
-import 'package:flutter/animation.dart';
import 'package:flutter/foundation.dart';
import 'package:flutter/physics.dart';
import 'package:flutter/rendering.dart';
diff --git a/packages/flutter/lib/src/widgets/page_view.dart b/packages/flutter/lib/src/widgets/page_view.dart
index ff8c88d..2436109 100644
--- a/packages/flutter/lib/src/widgets/page_view.dart
+++ b/packages/flutter/lib/src/widgets/page_view.dart
@@ -4,7 +4,6 @@
import 'dart:math' as math;
-import 'package:flutter/physics.dart';
import 'package:flutter/rendering.dart';
import 'package:flutter/gestures.dart' show DragStartBehavior;
import 'package:flutter/foundation.dart' show precisionErrorTolerance;
diff --git a/packages/flutter/lib/src/widgets/placeholder.dart b/packages/flutter/lib/src/widgets/placeholder.dart
index c91a0ff..01b4a6e 100644
--- a/packages/flutter/lib/src/widgets/placeholder.dart
+++ b/packages/flutter/lib/src/widgets/placeholder.dart
@@ -2,8 +2,6 @@
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
-import 'package:flutter/rendering.dart';
-
import 'basic.dart';
import 'framework.dart';
diff --git a/packages/flutter/lib/src/widgets/raw_keyboard_listener.dart b/packages/flutter/lib/src/widgets/raw_keyboard_listener.dart
index d5e8864..3c7cdeb 100644
--- a/packages/flutter/lib/src/widgets/raw_keyboard_listener.dart
+++ b/packages/flutter/lib/src/widgets/raw_keyboard_listener.dart
@@ -5,7 +5,6 @@
import 'package:flutter/foundation.dart';
import 'package:flutter/services.dart';
-import 'basic.dart';
import 'focus_manager.dart';
import 'focus_scope.dart';
import 'framework.dart';
diff --git a/packages/flutter/lib/src/widgets/scroll_activity.dart b/packages/flutter/lib/src/widgets/scroll_activity.dart
index 2f094c2..2cd116b 100644
--- a/packages/flutter/lib/src/widgets/scroll_activity.dart
+++ b/packages/flutter/lib/src/widgets/scroll_activity.dart
@@ -13,10 +13,8 @@
import 'basic.dart';
import 'framework.dart';
-import 'gesture_detector.dart';
import 'scroll_metrics.dart';
import 'scroll_notification.dart';
-import 'ticker_provider.dart';
/// A backend for a [ScrollActivity].
///
diff --git a/packages/flutter/lib/src/widgets/scroll_position.dart b/packages/flutter/lib/src/widgets/scroll_position.dart
index aa5dc9f..3c5b688 100644
--- a/packages/flutter/lib/src/widgets/scroll_position.dart
+++ b/packages/flutter/lib/src/widgets/scroll_position.dart
@@ -10,7 +10,6 @@
import 'basic.dart';
import 'framework.dart';
-import 'gesture_detector.dart';
import 'page_storage.dart';
import 'scroll_activity.dart';
import 'scroll_context.dart';
diff --git a/packages/flutter/lib/src/widgets/scroll_position_with_single_context.dart b/packages/flutter/lib/src/widgets/scroll_position_with_single_context.dart
index cc92e54..e390af2 100644
--- a/packages/flutter/lib/src/widgets/scroll_position_with_single_context.dart
+++ b/packages/flutter/lib/src/widgets/scroll_position_with_single_context.dart
@@ -10,7 +10,6 @@
import 'basic.dart';
import 'framework.dart';
-import 'gesture_detector.dart';
import 'scroll_activity.dart';
import 'scroll_context.dart';
import 'scroll_notification.dart';
diff --git a/packages/flutter/lib/src/widgets/scrollable.dart b/packages/flutter/lib/src/widgets/scrollable.dart
index a42767a..50a0106 100644
--- a/packages/flutter/lib/src/widgets/scrollable.dart
+++ b/packages/flutter/lib/src/widgets/scrollable.dart
@@ -8,8 +8,6 @@
import 'package:flutter/gestures.dart';
import 'package:flutter/rendering.dart';
-import 'package:flutter/scheduler.dart';
-import 'package:flutter/painting.dart';
import 'package:flutter/services.dart';
import 'actions.dart';
diff --git a/packages/flutter/lib/src/widgets/scrollbar.dart b/packages/flutter/lib/src/widgets/scrollbar.dart
index 5a712b6..6cc700f 100644
--- a/packages/flutter/lib/src/widgets/scrollbar.dart
+++ b/packages/flutter/lib/src/widgets/scrollbar.dart
@@ -5,7 +5,6 @@
import 'dart:async';
import 'dart:math' as math;
-import 'package:flutter/animation.dart';
import 'package:flutter/foundation.dart';
import 'package:flutter/gestures.dart';
import 'package:flutter/rendering.dart';
diff --git a/packages/flutter/lib/src/widgets/sliver_fill.dart b/packages/flutter/lib/src/widgets/sliver_fill.dart
index 7084df6..3417332 100644
--- a/packages/flutter/lib/src/widgets/sliver_fill.dart
+++ b/packages/flutter/lib/src/widgets/sliver_fill.dart
@@ -5,7 +5,6 @@
import 'package:flutter/foundation.dart';
import 'package:flutter/rendering.dart';
-import 'basic.dart';
import 'framework.dart';
import 'sliver.dart';
diff --git a/packages/flutter/lib/src/widgets/sliver_layout_builder.dart b/packages/flutter/lib/src/widgets/sliver_layout_builder.dart
index 5a8b460..3231319 100644
--- a/packages/flutter/lib/src/widgets/sliver_layout_builder.dart
+++ b/packages/flutter/lib/src/widgets/sliver_layout_builder.dart
@@ -2,7 +2,6 @@
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
-import 'package:flutter/foundation.dart';
import 'package:flutter/rendering.dart';
import 'framework.dart';
diff --git a/packages/flutter/lib/src/widgets/sliver_prototype_extent_list.dart b/packages/flutter/lib/src/widgets/sliver_prototype_extent_list.dart
index 760b59d..7a2ae0d 100644
--- a/packages/flutter/lib/src/widgets/sliver_prototype_extent_list.dart
+++ b/packages/flutter/lib/src/widgets/sliver_prototype_extent_list.dart
@@ -4,7 +4,6 @@
import 'package:flutter/rendering.dart';
-import 'basic.dart';
import 'framework.dart';
import 'sliver.dart';
diff --git a/packages/flutter/lib/src/widgets/spacer.dart b/packages/flutter/lib/src/widgets/spacer.dart
index 69c8e5c..be25ac3 100644
--- a/packages/flutter/lib/src/widgets/spacer.dart
+++ b/packages/flutter/lib/src/widgets/spacer.dart
@@ -2,8 +2,6 @@
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
-import 'package:flutter/rendering.dart';
-
import 'basic.dart';
import 'framework.dart';
diff --git a/packages/flutter/lib/src/widgets/text.dart b/packages/flutter/lib/src/widgets/text.dart
index efc82af..cf327c2 100644
--- a/packages/flutter/lib/src/widgets/text.dart
+++ b/packages/flutter/lib/src/widgets/text.dart
@@ -5,7 +5,6 @@
import 'dart:ui' as ui show TextHeightBehavior;
import 'package:flutter/foundation.dart';
-import 'package:flutter/painting.dart';
import 'basic.dart';
import 'framework.dart';
diff --git a/packages/flutter/lib/src/widgets/transitions.dart b/packages/flutter/lib/src/widgets/transitions.dart
index 73eb57b..4af2d1e 100644
--- a/packages/flutter/lib/src/widgets/transitions.dart
+++ b/packages/flutter/lib/src/widgets/transitions.dart
@@ -5,7 +5,6 @@
import 'dart:math' as math;
import 'package:flutter/rendering.dart';
-import 'package:vector_math/vector_math_64.dart' show Matrix4;
import 'basic.dart';
import 'container.dart';
diff --git a/packages/flutter/lib/src/widgets/widget_inspector.dart b/packages/flutter/lib/src/widgets/widget_inspector.dart
index 2463e3b..6121905 100644
--- a/packages/flutter/lib/src/widgets/widget_inspector.dart
+++ b/packages/flutter/lib/src/widgets/widget_inspector.dart
@@ -18,13 +18,10 @@
PointMode,
SceneBuilder,
Vertices;
-import 'dart:ui' show Canvas, Offset;
import 'package:flutter/foundation.dart';
-import 'package:flutter/painting.dart';
import 'package:flutter/rendering.dart';
import 'package:flutter/scheduler.dart';
-import 'package:vector_math/vector_math_64.dart';
import 'app.dart';
import 'basic.dart';
