diff --git a/bin/internal/canvaskit.version b/bin/internal/canvaskit.version
index 56b4dbe..5b4d72b 100644
--- a/bin/internal/canvaskit.version
+++ b/bin/internal/canvaskit.version
@@ -1 +1 @@
-yrsfF-vTvu4jzBBm1o6tDl70dky-l4G29Dnj75UvRDgC
+8wh6J7ZXGCgo1vvCQIqkmskYQZfjhcXQG1YCKFNrzRUC
diff --git a/bin/internal/engine.version b/bin/internal/engine.version
index 22793ce..7cf26e4 100644
--- a/bin/internal/engine.version
+++ b/bin/internal/engine.version
@@ -1 +1 @@
-4096e133ef518fc950e74a2ea9b10c1656ddffa0
+6610f3f2a9fb278f4090f963599ba0d54186804f
diff --git a/bin/internal/fuchsia-mac.version b/bin/internal/fuchsia-mac.version
index 5a05596..3f1e1ad 100644
--- a/bin/internal/fuchsia-mac.version
+++ b/bin/internal/fuchsia-mac.version
@@ -1 +1 @@
-jTGAqMkpVAa0EiLIgeSBEX9byFU6h8-rje_DgDmlSEIC
+SptzPcGbOBfYL-TumC73XZ9vaDJbzuZrDBi7OubOYuUC
diff --git a/dev/tools/gen_defaults/bin/gen_defaults.dart b/dev/tools/gen_defaults/bin/gen_defaults.dart
index 659cec6..7186877 100644
--- a/dev/tools/gen_defaults/bin/gen_defaults.dart
+++ b/dev/tools/gen_defaults/bin/gen_defaults.dart
@@ -17,17 +17,16 @@
 import 'dart:convert';
 import 'dart:io';
 
-import 'package:gen_defaults/action_chip_template.dart';
 import 'package:gen_defaults/app_bar_template.dart';
-import 'package:gen_defaults/banner_template.dart';
 import 'package:gen_defaults/button_template.dart';
 import 'package:gen_defaults/card_template.dart';
 import 'package:gen_defaults/checkbox_template.dart';
+import 'package:gen_defaults/chip_action_template.dart';
+import 'package:gen_defaults/chip_filter_template.dart';
+import 'package:gen_defaults/chip_input_template.dart';
 import 'package:gen_defaults/dialog_template.dart';
 import 'package:gen_defaults/fab_template.dart';
-import 'package:gen_defaults/filter_chip_template.dart';
 import 'package:gen_defaults/icon_button_template.dart';
-import 'package:gen_defaults/input_chip_template.dart';
 import 'package:gen_defaults/input_decorator_template.dart';
 import 'package:gen_defaults/navigation_bar_template.dart';
 import 'package:gen_defaults/navigation_rail_template.dart';
@@ -104,7 +103,6 @@
   tokens['colorsDark'] = _readTokenFile('color_dark.json');
 
   AppBarTemplate('AppBar', '$materialLib/app_bar.dart', tokens).updateFile();
-  BannerTemplate('Banner', '$materialLib/banner.dart', tokens).updateFile();
   ButtonTemplate('md.comp.elevated-button', 'ElevatedButton', '$materialLib/elevated_button.dart', tokens).updateFile();
   ButtonTemplate('md.comp.filled-button', 'FilledButton', '$materialLib/filled_button.dart', tokens).updateFile();
   ButtonTemplate('md.comp.filled-tonal-button', 'FilledTonalButton', '$materialLib/filled_button.dart', tokens).updateFile();
@@ -112,10 +110,10 @@
   ButtonTemplate('md.comp.text-button', 'TextButton', '$materialLib/text_button.dart', tokens).updateFile();
   CardTemplate('Card', '$materialLib/card.dart', tokens).updateFile();
   CheckboxTemplate('Checkbox', '$materialLib/checkbox.dart', tokens).updateFile();
-  ChipActionTemplate('ActionChip', '$materialLib/action_chip.dart', tokens).updateFile();
-  ChipFilterTemplate('FilterChip', '$materialLib/filter_chip.dart', tokens).updateFile();
-  ChipFilterTemplate('FilterChip', '$materialLib/choice_chip.dart', tokens).updateFile();
-  ChipInputTemplate('InputChip', '$materialLib/input_chip.dart', tokens).updateFile();
+  ChipActionTemplate('ActionChip', '$materialLib/chip_action.dart', tokens).updateFile();
+  ChipFilterTemplate('FilterChip', '$materialLib/chip_filter.dart', tokens).updateFile();
+  ChipFilterTemplate('FilterChip', '$materialLib/chip_choice.dart', tokens).updateFile();
+  ChipInputTemplate('InputChip', '$materialLib/chip_input.dart', tokens).updateFile();
   DialogTemplate('Dialog', '$materialLib/dialog.dart', tokens).updateFile();
   FABTemplate('FAB', '$materialLib/floating_action_button.dart', tokens).updateFile();
   IconButtonTemplate('IconButton', '$materialLib/icon_button.dart', tokens).updateFile();
diff --git a/dev/tools/gen_defaults/lib/banner_template.dart b/dev/tools/gen_defaults/lib/banner_template.dart
deleted file mode 100644
index 123c8ec..0000000
--- a/dev/tools/gen_defaults/lib/banner_template.dart
+++ /dev/null
@@ -1,31 +0,0 @@
-// Copyright 2014 The Flutter Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-import 'template.dart';
-
-class BannerTemplate extends TokenTemplate {
-  const BannerTemplate(super.blockName, super.fileName, super.tokens);
-
-  @override
-  String generate() => '''
-class _${blockName}DefaultsM3 extends MaterialBannerThemeData {
-  const _${blockName}DefaultsM3(this.context)
-    : super(elevation: ${elevation("md.comp.banner.container")});
-
-  final BuildContext context;
-
-  @override
-  Color? get backgroundColor => ${componentColor("md.comp.banner.container")};
-
-  @override
-  Color? get surfaceTintColor => ${color("md.comp.banner.container.surface-tint-layer.color")};
-
-  @override
-  Color? get dividerColor => ${color("md.comp.banner.divider.color")};
-
-  @override
-  TextStyle? get contentTextStyle => ${textStyle("md.comp.banner.supporting-text")};
-}
-''';
-}
diff --git a/dev/tools/gen_defaults/lib/action_chip_template.dart b/dev/tools/gen_defaults/lib/chip_action_template.dart
similarity index 100%
rename from dev/tools/gen_defaults/lib/action_chip_template.dart
rename to dev/tools/gen_defaults/lib/chip_action_template.dart
diff --git a/dev/tools/gen_defaults/lib/filter_chip_template.dart b/dev/tools/gen_defaults/lib/chip_filter_template.dart
similarity index 100%
rename from dev/tools/gen_defaults/lib/filter_chip_template.dart
rename to dev/tools/gen_defaults/lib/chip_filter_template.dart
diff --git a/dev/tools/gen_defaults/lib/input_chip_template.dart b/dev/tools/gen_defaults/lib/chip_input_template.dart
similarity index 100%
rename from dev/tools/gen_defaults/lib/input_chip_template.dart
rename to dev/tools/gen_defaults/lib/chip_input_template.dart
diff --git a/packages/flutter/lib/src/material/back_button.dart b/packages/flutter/lib/src/material/back_button.dart
index 3feaba5..4d1f1c8 100644
--- a/packages/flutter/lib/src/material/back_button.dart
+++ b/packages/flutter/lib/src/material/back_button.dart
@@ -27,31 +27,22 @@
   /// the current platform (as obtained from the [Theme]).
   const BackButtonIcon({ super.key });
 
-  @override
-  Widget build(BuildContext context) {
-    final String? semanticsLabel;
-    final IconData data;
-    switch (Theme.of(context).platform) {
+  /// Returns the appropriate "back" icon for the given `platform`.
+  static IconData _getIconData(TargetPlatform platform) {
+    switch (platform) {
       case TargetPlatform.android:
-        // Android uses semantics label to annotate the back button.
-        semanticsLabel = MaterialLocalizations.of(context).backButtonTooltip;
-        data = Icons.arrow_back;
-        break;
       case TargetPlatform.fuchsia:
       case TargetPlatform.linux:
       case TargetPlatform.windows:
-        semanticsLabel = null;
-        data = Icons.arrow_back;
-        break;
+        return Icons.arrow_back;
       case TargetPlatform.iOS:
       case TargetPlatform.macOS:
-        data = Icons.arrow_back_ios;
-        semanticsLabel = null;
-        break;
+        return Icons.arrow_back_ios;
     }
-
-    return Icon(data, semanticLabel: semanticsLabel);
   }
+
+  @override
+  Widget build(BuildContext context) => Icon(_getIconData(Theme.of(context).platform));
 }
 
 /// A Material Design back button.
@@ -158,22 +149,8 @@
   @override
   Widget build(BuildContext context) {
     assert(debugCheckHasMaterialLocalizations(context));
-    final String? semanticsLabel;
-    switch (Theme.of(context).platform) {
-      case TargetPlatform.android:
-        // Android uses semantics label to annotate the close button.
-        semanticsLabel = MaterialLocalizations.of(context).closeButtonTooltip;
-        break;
-      case TargetPlatform.fuchsia:
-      case TargetPlatform.linux:
-      case TargetPlatform.windows:
-      case TargetPlatform.iOS:
-      case TargetPlatform.macOS:
-        semanticsLabel = null;
-        break;
-    }
     return IconButton(
-      icon: Icon(Icons.close, semanticLabel: semanticsLabel),
+      icon: const Icon(Icons.close),
       color: color,
       tooltip: MaterialLocalizations.of(context).closeButtonTooltip,
       onPressed: () {
diff --git a/packages/flutter/lib/src/material/banner.dart b/packages/flutter/lib/src/material/banner.dart
index 83849d0..6eede2d 100644
--- a/packages/flutter/lib/src/material/banner.dart
+++ b/packages/flutter/lib/src/material/banner.dart
@@ -102,15 +102,12 @@
     this.elevation,
     this.leading,
     this.backgroundColor,
-    this.surfaceTintColor,
-    this.shadowColor,
-    this.dividerColor,
     this.padding,
     this.leadingPadding,
     this.forceActionsBelow = false,
     this.overflowAlignment = OverflowBarAlignment.end,
     this.animation,
-    this.onVisible,
+    this.onVisible
   }) : assert(elevation == null || elevation >= 0.0),
        assert(content != null),
        assert(actions != null),
@@ -156,29 +153,6 @@
   /// also `null`, [ColorScheme.surface] of [ThemeData.colorScheme] is used.
   final Color? backgroundColor;
 
-  /// The color used as an overlay on [backgroundColor] to indicate elevation.
-  ///
-  /// If null, [MaterialBannerThemeData.surfaceTintColor] is used. If that
-  /// is also null, the default value is [ColorScheme.surfaceTint].
-  ///
-  /// See [Material.surfaceTintColor] for more details on how this
-  /// overlay is applied.
-  final Color? surfaceTintColor;
-
-  /// The color of the shadow below the [MaterialBanner].
-  ///
-  /// If this property is null, then [MaterialBannerThemeData.shadowColor] of
-  /// [ThemeData.bannerTheme] is used. If that is also null, the default value
-  /// is null.
-  final Color? shadowColor;
-
-  /// The color of the divider.
-  ///
-  /// If this property is null, then [MaterialBannerThemeData.dividerColor] of
-  /// [ThemeData.bannerTheme] is used. If that is also null, the default value
-  /// is [ColorScheme.surfaceVariant].
-  final Color? dividerColor;
-
   /// The amount of space by which to inset the [content].
   ///
   /// If the [actions] are below the [content], this defaults to
@@ -299,7 +273,6 @@
 
     final ThemeData theme = Theme.of(context);
     final MaterialBannerThemeData bannerTheme = MaterialBannerTheme.of(context);
-    final MaterialBannerThemeData defaults = theme.useMaterial3 ? _BannerDefaultsM3(context) : _BannerDefaultsM2(context);
 
     final bool isSingleRow = widget.actions.length == 1 && !widget.forceActionsBelow;
     final EdgeInsetsGeometry padding = widget.padding ?? bannerTheme.padding ?? (isSingleRow
@@ -323,26 +296,16 @@
     final double elevation = widget.elevation ?? bannerTheme.elevation ?? 0.0;
     final Color backgroundColor = widget.backgroundColor
         ?? bannerTheme.backgroundColor
-        ?? defaults.backgroundColor!;
-    final Color? surfaceTintColor = widget.surfaceTintColor
-        ?? bannerTheme.surfaceTintColor
-        ?? defaults.surfaceTintColor;
-    final Color? shadowColor = widget.shadowColor
-        ?? bannerTheme.shadowColor;
-    final Color? dividerColor = widget.dividerColor
-        ?? bannerTheme.dividerColor
-        ?? defaults.dividerColor;
+        ?? theme.colorScheme.surface;
     final TextStyle? textStyle = widget.contentTextStyle
         ?? bannerTheme.contentTextStyle
-        ?? defaults.contentTextStyle;
+        ?? theme.textTheme.bodyMedium;
 
     Widget materialBanner = Container(
       margin: EdgeInsets.only(bottom: elevation > 0 ? 10.0 : 0.0),
       child: Material(
         elevation: elevation,
         color: backgroundColor,
-        surfaceTintColor: surfaceTintColor,
-        shadowColor: shadowColor,
         child: Column(
           mainAxisSize: MainAxisSize.min,
           children: <Widget>[
@@ -368,8 +331,9 @@
             ),
             if (!isSingleRow)
               buttonBar,
+
             if (elevation == 0)
-              Divider(height: 0, color: dividerColor),
+              const Divider(height: 0),
           ],
         ),
       ),
@@ -430,51 +394,3 @@
     );
   }
 }
-
-class _BannerDefaultsM2 extends MaterialBannerThemeData {
-  _BannerDefaultsM2(this.context)
-    : _theme = Theme.of(context),
-      super(elevation: 0.0);
-
-  final BuildContext context;
-  final ThemeData _theme;
-
-  @override
-  Color? get backgroundColor => _theme.colorScheme.surface;
-
-  @override
-  Color? get dividerColor => Theme.of(context).colorScheme.surfaceVariant;
-
-  @override
-  TextStyle? get contentTextStyle => _theme.textTheme.bodyText2;
-}
-
-// BEGIN GENERATED TOKEN PROPERTIES - Banner
-
-// Do not edit by hand. The code between the "BEGIN GENERATED" and
-// "END GENERATED" comments are generated from data in the Material
-// Design token database by the script:
-//   dev/tools/gen_defaults/bin/gen_defaults.dart.
-
-// Token database version: v0_101
-
-class _BannerDefaultsM3 extends MaterialBannerThemeData {
-  const _BannerDefaultsM3(this.context)
-    : super(elevation: 1.0);
-
-  final BuildContext context;
-
-  @override
-  Color? get backgroundColor => Theme.of(context).colorScheme.surface;
-
-  @override
-  Color? get surfaceTintColor => Theme.of(context).colorScheme.surfaceTint;
-
-  @override
-  Color? get dividerColor => Theme.of(context).colorScheme.surfaceVariant;
-
-  @override
-  TextStyle? get contentTextStyle => Theme.of(context).textTheme.bodyMedium;
-}
-
-// END GENERATED TOKEN PROPERTIES - Banner
diff --git a/packages/flutter/lib/src/material/banner_theme.dart b/packages/flutter/lib/src/material/banner_theme.dart
index 8b0b183..5081f88 100644
--- a/packages/flutter/lib/src/material/banner_theme.dart
+++ b/packages/flutter/lib/src/material/banner_theme.dart
@@ -35,9 +35,6 @@
   /// [ThemeData.bannerTheme].
   const MaterialBannerThemeData({
     this.backgroundColor,
-    this.surfaceTintColor,
-    this.shadowColor,
-    this.dividerColor,
     this.contentTextStyle,
     this.elevation,
     this.padding,
@@ -47,15 +44,6 @@
   /// The background color of a [MaterialBanner].
   final Color? backgroundColor;
 
-  /// Overrides the default value of [MaterialBanner.surfaceTintColor].
-  final Color? surfaceTintColor;
-
-  /// Overrides the default value of [MaterialBanner.shadowColor].
-  final Color? shadowColor;
-
-  /// Overrides the default value of [MaterialBanner.dividerColor].
-  final Color? dividerColor;
-
   /// Used to configure the [DefaultTextStyle] for the [MaterialBanner.content]
   /// widget.
   final TextStyle? contentTextStyle;
@@ -75,9 +63,6 @@
   /// new values.
   MaterialBannerThemeData copyWith({
     Color? backgroundColor,
-    Color? surfaceTintColor,
-    Color? shadowColor,
-    Color? dividerColor,
     TextStyle? contentTextStyle,
     double? elevation,
     EdgeInsetsGeometry? padding,
@@ -85,9 +70,6 @@
   }) {
     return MaterialBannerThemeData(
       backgroundColor: backgroundColor ?? this.backgroundColor,
-      surfaceTintColor: surfaceTintColor ?? this.surfaceTintColor,
-      shadowColor: shadowColor ?? this.shadowColor,
-      dividerColor: dividerColor ?? this.dividerColor,
       contentTextStyle: contentTextStyle ?? this.contentTextStyle,
       elevation: elevation ?? this.elevation,
       padding: padding ?? this.padding,
@@ -104,9 +86,6 @@
     assert(t != null);
     return MaterialBannerThemeData(
       backgroundColor: Color.lerp(a?.backgroundColor, b?.backgroundColor, t),
-      surfaceTintColor: Color.lerp(a?.surfaceTintColor, b?.surfaceTintColor, t),
-      shadowColor: Color.lerp(a?.shadowColor, b?.shadowColor, t),
-      dividerColor: Color.lerp(a?.dividerColor, b?.dividerColor, t),
       contentTextStyle: TextStyle.lerp(a?.contentTextStyle, b?.contentTextStyle, t),
       elevation: lerpDouble(a?.elevation, b?.elevation, t),
       padding: EdgeInsetsGeometry.lerp(a?.padding, b?.padding, t),
@@ -117,9 +96,6 @@
   @override
   int get hashCode => Object.hash(
     backgroundColor,
-    surfaceTintColor,
-    shadowColor,
-    dividerColor,
     contentTextStyle,
     elevation,
     padding,
@@ -135,25 +111,19 @@
       return false;
     }
     return other is MaterialBannerThemeData
-      && other.backgroundColor == backgroundColor
-      && other.surfaceTintColor == surfaceTintColor
-      && other.shadowColor == shadowColor
-      && other.dividerColor == dividerColor
-      && other.contentTextStyle == contentTextStyle
-      && other.elevation == elevation
-      && other.padding == padding
-      && other.leadingPadding == leadingPadding;
+        && other.backgroundColor == backgroundColor
+        && other.contentTextStyle == contentTextStyle
+        && other.elevation == elevation
+        && other.padding == padding
+        && other.leadingPadding == leadingPadding;
   }
 
   @override
   void debugFillProperties(DiagnosticPropertiesBuilder properties) {
     super.debugFillProperties(properties);
     properties.add(ColorProperty('backgroundColor', backgroundColor, defaultValue: null));
-    properties.add(ColorProperty('surfaceTintColor', surfaceTintColor, defaultValue: null));
-    properties.add(ColorProperty('shadowColor', shadowColor, defaultValue: null));
-    properties.add(ColorProperty('dividerColor', dividerColor, defaultValue: null));
     properties.add(DiagnosticsProperty<TextStyle>('contentTextStyle', contentTextStyle, defaultValue: null));
-    properties.add(DoubleProperty('elevation', elevation, defaultValue: null));
+    properties.add(DiagnosticsProperty<double>('elevation', elevation, defaultValue: null));
     properties.add(DiagnosticsProperty<EdgeInsetsGeometry>('padding', padding, defaultValue: null));
     properties.add(DiagnosticsProperty<EdgeInsetsGeometry>('leadingPadding', leadingPadding, defaultValue: null));
   }
diff --git a/packages/flutter/test/material/back_button_test.dart b/packages/flutter/test/material/back_button_test.dart
index 09d9fd1..d4ff9a9 100644
--- a/packages/flutter/test/material/back_button_test.dart
+++ b/packages/flutter/test/material/back_button_test.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/material.dart';
 import 'package:flutter_test/flutter_test.dart';
 
@@ -153,21 +152,9 @@
     tester.state<NavigatorState>(find.byType(Navigator)).pushNamed('/next');
 
     await tester.pumpAndSettle();
-    final String? expectedLabel;
-    switch(defaultTargetPlatform) {
-      case TargetPlatform.android:
-        expectedLabel = 'Back';
-        break;
-      case TargetPlatform.fuchsia:
-      case TargetPlatform.iOS:
-      case TargetPlatform.linux:
-      case TargetPlatform.macOS:
-      case TargetPlatform.windows:
-        expectedLabel = null;
-    }
+
     expect(tester.getSemantics(find.byType(BackButton)), matchesSemantics(
       tooltip: 'Back',
-      label: expectedLabel,
       isButton: true,
       hasEnabledState: true,
       isEnabled: true,
@@ -175,51 +162,7 @@
       isFocusable: true,
     ));
     handle.dispose();
-  }, variant: TargetPlatformVariant.all());
-
-  testWidgets('CloseButton semantics', (WidgetTester tester) async {
-    final SemanticsHandle handle = tester.ensureSemantics();
-    await tester.pumpWidget(
-      MaterialApp(
-        home: const Material(child: Text('Home')),
-        routes: <String, WidgetBuilder>{
-          '/next': (BuildContext context) {
-            return const Material(
-              child: Center(
-                child: CloseButton(),
-              ),
-            );
-          },
-        },
-      ),
-    );
-
-    tester.state<NavigatorState>(find.byType(Navigator)).pushNamed('/next');
-
-    await tester.pumpAndSettle();
-    final String? expectedLabel;
-    switch(defaultTargetPlatform) {
-      case TargetPlatform.android:
-        expectedLabel = 'Close';
-        break;
-      case TargetPlatform.fuchsia:
-      case TargetPlatform.iOS:
-      case TargetPlatform.linux:
-      case TargetPlatform.macOS:
-      case TargetPlatform.windows:
-        expectedLabel = null;
-    }
-    expect(tester.getSemantics(find.byType(CloseButton)), matchesSemantics(
-      tooltip: 'Close',
-      label: expectedLabel,
-      isButton: true,
-      hasEnabledState: true,
-      isEnabled: true,
-      hasTapAction: true,
-      isFocusable: true,
-    ));
-    handle.dispose();
-  }, variant: TargetPlatformVariant.all());
+  });
 
   testWidgets('CloseButton color', (WidgetTester tester) async {
     await tester.pumpWidget(
diff --git a/packages/flutter/test/material/banner_theme_test.dart b/packages/flutter/test/material/banner_theme_test.dart
index db351f9..258966a 100644
--- a/packages/flutter/test/material/banner_theme_test.dart
+++ b/packages/flutter/test/material/banner_theme_test.dart
@@ -15,13 +15,7 @@
   test('MaterialBannerThemeData null fields by default', () {
     const MaterialBannerThemeData bannerTheme = MaterialBannerThemeData();
     expect(bannerTheme.backgroundColor, null);
-    expect(bannerTheme.surfaceTintColor, null);
-    expect(bannerTheme.shadowColor, null);
-    expect(bannerTheme.dividerColor, null);
     expect(bannerTheme.contentTextStyle, null);
-    expect(bannerTheme.elevation, null);
-    expect(bannerTheme.padding, null);
-    expect(bannerTheme.leadingPadding, null);
   });
 
   testWidgets('Default MaterialBannerThemeData debugFillProperties', (WidgetTester tester) async {
@@ -29,9 +23,9 @@
     const MaterialBannerThemeData().debugFillProperties(builder);
 
     final List<String> description = builder.properties
-      .where((DiagnosticsNode node) => !node.isFiltered(DiagnosticLevel.info))
-      .map((DiagnosticsNode node) => node.toString())
-      .toList();
+        .where((DiagnosticsNode node) => !node.isFiltered(DiagnosticLevel.info))
+        .map((DiagnosticsNode node) => node.toString())
+        .toList();
 
     expect(description, <String>[]);
   });
@@ -39,43 +33,27 @@
   testWidgets('MaterialBannerThemeData implements debugFillProperties', (WidgetTester tester) async {
     final DiagnosticPropertiesBuilder builder = DiagnosticPropertiesBuilder();
     const MaterialBannerThemeData(
-      backgroundColor: Color(0xfffffff0),
-      surfaceTintColor: Color(0xfffffff1),
-      shadowColor: Color(0xfffffff2),
-      dividerColor: Color(0xfffffff3),
-      contentTextStyle: TextStyle(color: Color(0xfffffff4)),
-      elevation: 4.0,
-      padding: EdgeInsets.all(20.0),
-      leadingPadding: EdgeInsets.only(left: 8.0),
+      backgroundColor: Color(0xFFFFFFFF),
+      contentTextStyle: TextStyle(color: Color(0xFFFFFFFF)),
     ).debugFillProperties(builder);
 
     final List<String> description = builder.properties
-      .where((DiagnosticsNode node) => !node.isFiltered(DiagnosticLevel.info))
-      .map((DiagnosticsNode node) => node.toString())
-      .toList();
+        .where((DiagnosticsNode node) => !node.isFiltered(DiagnosticLevel.info))
+        .map((DiagnosticsNode node) => node.toString())
+        .toList();
 
     expect(description, <String>[
-      'backgroundColor: Color(0xfffffff0)',
-      'surfaceTintColor: Color(0xfffffff1)',
-      'shadowColor: Color(0xfffffff2)',
-      'dividerColor: Color(0xfffffff3)',
-      'contentTextStyle: TextStyle(inherit: true, color: Color(0xfffffff4))',
-      'elevation: 4.0',
-      'padding: EdgeInsets.all(20.0)',
-      'leadingPadding: EdgeInsets(8.0, 0.0, 0.0, 0.0)',
+      'backgroundColor: Color(0xffffffff)',
+      'contentTextStyle: TextStyle(inherit: true, color: Color(0xffffffff))',
     ]);
   });
 
   testWidgets('Passing no MaterialBannerThemeData returns defaults', (WidgetTester tester) async {
-    final ThemeData theme = ThemeData();
     const String contentText = 'Content';
-
     await tester.pumpWidget(MaterialApp(
-      theme: ThemeData(useMaterial3: true),
       home: Scaffold(
         body: MaterialBanner(
           content: const Text(contentText),
-          leading: const Icon(Icons.umbrella),
           actions: <Widget>[
             TextButton(
               child: const Text('Action'),
@@ -87,39 +65,16 @@
     ));
 
     final Material material = _getMaterialFromText(tester, contentText);
-    expect(material.color, const Color(0xffffffff));
-    expect(material.surfaceTintColor, theme.colorScheme.surfaceTint);
-    expect(material.shadowColor, null);
-    expect(material.elevation, 0.0);
-
     final RenderParagraph content = _getTextRenderObjectFromDialog(tester, contentText);
-    // Default value for ThemeData.typography is Typography.material2021()
-    expect(
-      content.text.style,
-      Typography.material2021().englishLike.bodyMedium!.merge(
-        Typography.material2021().black.bodyMedium,
-      ),
-    );
-
-    final Offset rowTopLeft = tester.getTopLeft(find.byType(Row));
-    final Offset materialTopLeft = tester.getTopLeft(_materialFinder());
-    final Offset leadingTopLeft = tester.getTopLeft(find.byIcon(Icons.umbrella));
-    expect(rowTopLeft.dy - materialTopLeft.dy, 2.0); // Default single line top padding.
-    expect(rowTopLeft.dx - materialTopLeft.dx, 16.0); // Default single line start padding.
-    expect(leadingTopLeft.dy - materialTopLeft.dy, 16); // Default leading padding.
-    expect(leadingTopLeft.dx - materialTopLeft.dx, 16); // Default leading padding.
-
-    final Divider divider = tester.widget<Divider>(find.byType(Divider));
-    expect(divider.color, theme.colorScheme.surfaceVariant);
+    expect(material.color, const Color(0xffffffff));
+    // Default value for ThemeData.typography is Typography.material2014()
+    expect(content.text.style, Typography.material2014().englishLike.bodyMedium!.merge(Typography.material2014().black.bodyMedium));
   });
 
   testWidgets('Passing no MaterialBannerThemeData returns defaults when presented by ScaffoldMessenger', (WidgetTester tester) async {
-    final ThemeData theme = ThemeData();
     const String contentText = 'Content';
     const Key tapTarget = Key('tap-target');
-
     await tester.pumpWidget(MaterialApp(
-      theme: ThemeData(useMaterial3: true),
       home: Scaffold(
         body: Builder(
           builder: (BuildContext context) {
@@ -128,7 +83,6 @@
               onTap: () {
                 ScaffoldMessenger.of(context).showMaterialBanner(MaterialBanner(
                   content: const Text(contentText),
-                  leading: const Icon(Icons.umbrella),
                   actions: <Widget>[
                     TextButton(
                       child: const Text('Action'),
@@ -151,30 +105,10 @@
     await tester.pumpAndSettle();
 
     final Material material = _getMaterialFromText(tester, contentText);
-    expect(material.color, const Color(0xffffffff));
-    expect(material.surfaceTintColor, theme.colorScheme.surfaceTint);
-    expect(material.shadowColor, null);
-    expect(material.elevation, 0.0);
-
     final RenderParagraph content = _getTextRenderObjectFromDialog(tester, contentText);
-    // Default value for ThemeData.typography is Typography.material2021()
-    expect(
-      content.text.style,
-      Typography.material2021().englishLike.bodyMedium!.merge(
-        Typography.material2021().black.bodyMedium,
-      ),
-    );
-
-    final Offset rowTopLeft = tester.getTopLeft(find.byType(Row));
-    final Offset materialTopLeft = tester.getTopLeft(_materialFinder());
-    final Offset leadingTopLeft = tester.getTopLeft(find.byIcon(Icons.umbrella));
-    expect(rowTopLeft.dy - materialTopLeft.dy, 2.0); // Default single line top padding.
-    expect(rowTopLeft.dx - materialTopLeft.dx, 16.0); // Default single line start padding.
-    expect(leadingTopLeft.dy - materialTopLeft.dy, 16); // Default leading padding.
-    expect(leadingTopLeft.dx - materialTopLeft.dx, 16); // Default leading padding.
-
-    final Divider divider = tester.widget<Divider>(find.byType(Divider));
-    expect(divider.color, theme.colorScheme.surfaceVariant);
+    expect(material.color, const Color(0xffffffff));
+    // Default value for ThemeData.typography is Typography.material2014()
+    expect(content.text.style, Typography.material2014().englishLike.bodyMedium!.merge(Typography.material2014().black.bodyMedium));
   });
 
   testWidgets('MaterialBanner uses values from MaterialBannerThemeData', (WidgetTester tester) async {
@@ -197,12 +131,8 @@
     ));
 
     final Material material = _getMaterialFromText(tester, contentText);
-    expect(material.color, bannerTheme.backgroundColor);
-    expect(material.surfaceTintColor, bannerTheme.surfaceTintColor);
-    expect(material.shadowColor, bannerTheme.shadowColor);
-    expect(material.elevation, bannerTheme.elevation);
-
     final RenderParagraph content = _getTextRenderObjectFromDialog(tester, contentText);
+    expect(material.color, bannerTheme.backgroundColor);
     expect(content.text.style, bannerTheme.contentTextStyle);
 
     final Offset contentTopLeft = tester.getTopLeft(_textFinder(contentText));
@@ -212,8 +142,6 @@
     expect(contentTopLeft.dx - materialTopLeft.dx, 41);
     expect(leadingTopLeft.dy - materialTopLeft.dy, 19);
     expect(leadingTopLeft.dx - materialTopLeft.dx, 11);
-
-    expect(find.byType(Divider), findsNothing);
   });
 
   testWidgets('MaterialBanner uses values from MaterialBannerThemeData when presented by ScaffoldMessenger', (WidgetTester tester) async {
@@ -253,12 +181,8 @@
     await tester.pumpAndSettle();
 
     final Material material = _getMaterialFromText(tester, contentText);
-    expect(material.color, bannerTheme.backgroundColor);
-    expect(material.surfaceTintColor, bannerTheme.surfaceTintColor);
-    expect(material.shadowColor, bannerTheme.shadowColor);
-    expect(material.elevation, bannerTheme.elevation);
-
     final RenderParagraph content = _getTextRenderObjectFromDialog(tester, contentText);
+    expect(material.color, bannerTheme.backgroundColor);
     expect(content.text.style, bannerTheme.contentTextStyle);
 
     final Offset contentTopLeft = tester.getTopLeft(_textFinder(contentText));
@@ -268,26 +192,18 @@
     expect(contentTopLeft.dx - materialTopLeft.dx, 41);
     expect(leadingTopLeft.dy - materialTopLeft.dy, 19);
     expect(leadingTopLeft.dx - materialTopLeft.dx, 11);
-
-    expect(find.byType(Divider), findsNothing);
   });
 
   testWidgets('MaterialBanner widget properties take priority over theme', (WidgetTester tester) async {
     const Color backgroundColor = Colors.purple;
-    const Color surfaceTintColor = Colors.red;
-    const Color shadowColor = Colors.orange;
     const TextStyle textStyle = TextStyle(color: Colors.green);
     final MaterialBannerThemeData bannerTheme = _bannerTheme();
     const String contentText = 'Content';
-
     await tester.pumpWidget(MaterialApp(
       theme: ThemeData(bannerTheme: bannerTheme),
       home: Scaffold(
         body: MaterialBanner(
           backgroundColor: backgroundColor,
-          surfaceTintColor: surfaceTintColor,
-          shadowColor: shadowColor,
-          elevation: 6.0,
           leading: const Icon(Icons.ac_unit),
           contentTextStyle: textStyle,
           content: const Text(contentText),
@@ -304,12 +220,8 @@
     ));
 
     final Material material = _getMaterialFromText(tester, contentText);
-    expect(material.color, backgroundColor);
-    expect(material.surfaceTintColor, surfaceTintColor);
-    expect(material.shadowColor, shadowColor);
-    expect(material.elevation, 6.0);
-
     final RenderParagraph content = _getTextRenderObjectFromDialog(tester, contentText);
+    expect(material.color, backgroundColor);
     expect(content.text.style, textStyle);
 
     final Offset contentTopLeft = tester.getTopLeft(_textFinder(contentText));
@@ -319,18 +231,14 @@
     expect(contentTopLeft.dx - materialTopLeft.dx, 58);
     expect(leadingTopLeft.dy - materialTopLeft.dy, 24);
     expect(leadingTopLeft.dx - materialTopLeft.dx, 22);
-
-    expect(find.byType(Divider), findsNothing);
   });
 
   testWidgets('MaterialBanner widget properties take priority over theme when presented by ScaffoldMessenger', (WidgetTester tester) async {
     const Color backgroundColor = Colors.purple;
-    const double elevation = 6.0;
     const TextStyle textStyle = TextStyle(color: Colors.green);
     final MaterialBannerThemeData bannerTheme = _bannerTheme();
     const String contentText = 'Content';
     const Key tapTarget = Key('tap-target');
-
     await tester.pumpWidget(MaterialApp(
       theme: ThemeData(bannerTheme: bannerTheme),
       home: Scaffold(
@@ -341,7 +249,6 @@
               onTap: () {
                 ScaffoldMessenger.of(context).showMaterialBanner(MaterialBanner(
                   backgroundColor: backgroundColor,
-                  elevation: elevation,
                   leading: const Icon(Icons.ac_unit),
                   contentTextStyle: textStyle,
                   content: const Text(contentText),
@@ -369,10 +276,8 @@
     await tester.pumpAndSettle();
 
     final Material material = _getMaterialFromText(tester, contentText);
-    expect(material.color, backgroundColor);
-    expect(material.elevation, elevation);
-
     final RenderParagraph content = _getTextRenderObjectFromDialog(tester, contentText);
+    expect(material.color, backgroundColor);
     expect(content.text.style, textStyle);
 
     final Offset contentTopLeft = tester.getTopLeft(_textFinder(contentText));
@@ -382,8 +287,6 @@
     expect(contentTopLeft.dx - materialTopLeft.dx, 58);
     expect(leadingTopLeft.dy - materialTopLeft.dy, 24);
     expect(leadingTopLeft.dx - materialTopLeft.dx, 22);
-
-    expect(find.byType(Divider), findsNothing);
   });
 
   testWidgets('MaterialBanner uses color scheme when necessary', (WidgetTester tester) async {
@@ -446,130 +349,12 @@
     final Material material = _getMaterialFromText(tester, contentText);
     expect(material.color, colorScheme.surface);
   });
-
-  group('Material 2', () {
-    // Tests that are only relevant for Material 2. Once ThemeData.useMaterial3
-    // is turned on by default, these tests can be removed.
-
-    testWidgets('Passing no MaterialBannerThemeData returns defaults', (WidgetTester tester) async {
-      final ThemeData theme = ThemeData();
-      const String contentText = 'Content';
-
-      await tester.pumpWidget(MaterialApp(
-        home: Scaffold(
-          body: MaterialBanner(
-            content: const Text(contentText),
-            leading: const Icon(Icons.umbrella),
-            actions: <Widget>[
-              TextButton(
-                child: const Text('Action'),
-                onPressed: () { },
-              ),
-            ],
-          ),
-        ),
-      ));
-
-      final Material material = _getMaterialFromText(tester, contentText);
-      expect(material.color, const Color(0xffffffff));
-      expect(material.surfaceTintColor, null);
-      expect(material.shadowColor, null);
-      expect(material.elevation, 0.0);
-
-      final RenderParagraph content = _getTextRenderObjectFromDialog(tester, contentText);
-      // Default value for ThemeData.typography is Typography.material2014()
-      expect(
-        content.text.style,
-        Typography.material2014().englishLike.bodyText2!.merge(
-          Typography.material2014().black.bodyText2,
-        ),
-      );
-
-      final Offset rowTopLeft = tester.getTopLeft(find.byType(Row));
-      final Offset materialTopLeft = tester.getTopLeft(_materialFinder());
-      final Offset leadingTopLeft = tester.getTopLeft(find.byIcon(Icons.umbrella));
-      expect(rowTopLeft.dy - materialTopLeft.dy, 2.0); // Default single line top padding.
-      expect(rowTopLeft.dx - materialTopLeft.dx, 16.0); // Default single line start padding.
-      expect(leadingTopLeft.dy - materialTopLeft.dy, 16); // Default leading padding.
-      expect(leadingTopLeft.dx - materialTopLeft.dx, 16); // Default leading padding.
-
-      final Divider divider = tester.widget<Divider>(find.byType(Divider));
-      expect(divider.color, theme.colorScheme.surfaceVariant);
-    });
-
-    testWidgets('Passing no MaterialBannerThemeData returns defaults when presented by ScaffoldMessenger', (WidgetTester tester) async {
-      final ThemeData theme = ThemeData();
-      const String contentText = 'Content';
-      const Key tapTarget = Key('tap-target');
-
-      await tester.pumpWidget(MaterialApp(
-        home: Scaffold(
-          body: Builder(
-            builder: (BuildContext context) {
-              return GestureDetector(
-                key: tapTarget,
-                onTap: () {
-                  ScaffoldMessenger.of(context).showMaterialBanner(MaterialBanner(
-                    content: const Text(contentText),
-                    leading: const Icon(Icons.umbrella),
-                    actions: <Widget>[
-                      TextButton(
-                        child: const Text('Action'),
-                        onPressed: () { },
-                      ),
-                    ],
-                  ));
-                },
-                behavior: HitTestBehavior.opaque,
-                child: const SizedBox(
-                  height: 100.0,
-                  width: 100.0,
-                ),
-              );
-            },
-          ),
-        ),
-      ));
-      await tester.tap(find.byKey(tapTarget));
-      await tester.pumpAndSettle();
-
-      final Material material = _getMaterialFromText(tester, contentText);
-      expect(material.color, const Color(0xffffffff));
-      expect(material.surfaceTintColor, null);
-      expect(material.shadowColor, null);
-      expect(material.elevation, 0.0);
-
-      final RenderParagraph content = _getTextRenderObjectFromDialog(tester, contentText);
-      // Default value for ThemeData.typography is Typography.material2014()
-      expect(
-        content.text.style,
-        Typography.material2014().englishLike.bodyText2!.merge(
-          Typography.material2014().black.bodyText2,
-        ),
-      );
-
-      final Offset rowTopLeft = tester.getTopLeft(find.byType(Row));
-      final Offset materialTopLeft = tester.getTopLeft(_materialFinder());
-      final Offset leadingTopLeft = tester.getTopLeft(find.byIcon(Icons.umbrella));
-      expect(rowTopLeft.dy - materialTopLeft.dy, 2.0); // Default single line top padding.
-      expect(rowTopLeft.dx - materialTopLeft.dx, 16.0); // Default single line start padding.
-      expect(leadingTopLeft.dy - materialTopLeft.dy, 16); // Default leading padding.
-      expect(leadingTopLeft.dx - materialTopLeft.dx, 16); // Default leading padding.
-
-      final Divider divider = tester.widget<Divider>(find.byType(Divider));
-      expect(divider.color, theme.colorScheme.surfaceVariant);
-    });
-  });
 }
 
 MaterialBannerThemeData _bannerTheme() {
   return const MaterialBannerThemeData(
     backgroundColor: Colors.orange,
-    surfaceTintColor: Colors.yellow,
-    shadowColor: Colors.red,
-    dividerColor: Colors.green,
     contentTextStyle: TextStyle(color: Colors.pink),
-    elevation: 4.0,
     padding: EdgeInsets.all(5),
     leadingPadding: EdgeInsets.all(6),
   );