This PR attempts to:
- reland #140744
- reland #141541 (which is also in #142300 - I will close it once this PR is merged)

Fixes a bug where programmatically navigating during an iOS back gesture caused the app to enter an unstable state.

Avoid depending on files from build_system/targets other than from top level entrypoints in flutter_tools. (#142760)

Add a new `BuildTargets` class that provides commonly used build targets. And avoid importing files from `build_system/targets` except from the top level entrypoints or from top level commands.

Also move `scene_importer.dart` and `shader_compiler.dart` into `build_system/tools` because they are not `Target` classes, but wrapper for certain tools.

With this change, we can ignore all files in `build_system/targets` internally and make PR #142709 easier to land internally. See cl/603434066 for the corresponding internal change.

Related to:
https://github.com/flutter/flutter/pull/142709
https://github.com/flutter/flutter/issues/142041

Also note that I have opted to add a new variable in `globals.dart` for `BuildTargets` in this PR, but I know that we are trying to get rid of globals. Several alternatives that I was considering:

1. Add a new field in `BuildSystem` that returns a `BuildTargets` instance. Since `BuildSystem` is already in `globals`, we can access build targets using `globals.buildSystem.buildTargets` without adding a new global variable.
2. Properly inject the `BuildTargetsImpl` instance from the top level `executable.dart` and top level commands.

Let me know if you want me to do one of the above instead. Thanks!

https://github.com/flutter/packages/compare/5b48c446976f...d37fb0a716e7

2024-02-02 32242716+ricardoamador@users.noreply.github.com Add a link the different possible Android virtual device configs (flutter/packages#6033)
2024-02-01 32242716+ricardoamador@users.noreply.github.com Update the emulator versions and expose cipd. (flutter/packages#6025)
2024-02-01 stuartmorgan@google.com [tool] Add details to missing gradle coverage error (flutter/packages#6029)
2024-02-01 stuartmorgan@google.com [file_selector] Fix comment typo (flutter/packages#6027)
2024-02-01 43054281+camsim99@users.noreply.github.com [camerax] Change `buildPreview` to return `Texture` versus `FutureBuilder` (flutter/packages#6021)
2024-02-01 engine-flutter-autoroll@skia.org Manual roll Flutter from c65ab4d5 to e02e2079 (38 revisions) (flutter/packages#6028)
2024-02-01 engine-flutter-autoroll@skia.org Manual roll Flutter from 75a2e5b4 to c65ab4d5 (22 revisions) (flutter/packages#6026)
2024-02-01 engine-flutter-autoroll@skia.org Roll Flutter from ace91811 to 75a2e5b4 (16 revisions) (flutter/packages#6017)
2024-02-01 JeroenWeener@users.noreply.github.com [webview_flutter] Support for handling basic authentication requests (flutter/packages#5727)
2024-01-31 stuartmorgan@google.com [tool] Extend `flutter test` workaround to other desktops (flutter/packages#6024)
2024-01-31 katelovett@google.com [two_dimensional_scrollables] Merged cells for TableView (flutter/packages#5917)
2024-01-31 tessertaha@gmail.com [rfw] Restore RFW to 100% coverage after `ButtonBar` update (flutter/packages#6020)
2024-01-31 louisehsu@google.com [in_app_purchase] Convert storefront(), transactions(), canMakePayment(), and addPayment() to pigeon (flutter/packages#5910)
2024-01-31 reidbaker@google.com [in_app_purchase] Add play country code api (flutter/packages#5941)

If this roll has caused a breakage, revert this CL and stop the roller
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*Replace this paragraph with a description of what this PR is changing or adding, and why. Consider including before/after screenshots.*

*List which issues are fixed by this PR. You must list at least one issue. An issue is not required if the PR fixes something trivial like a typo.*

*If you had to change anything in the [flutter/tests] repo, include a link to the migration guide as per the [breaking change policy].*

Undoing https://github.com/flutter/flutter/pull/142323 to allow all iOS tests to use iOS 16 or 17.

https://github.com/flutter/engine/compare/b35153d00b2e...e29263212bfd

2024-02-02 cone.bart@gmail.com [Android] Fix TextInputType.none for
devices with physical keyboard (flutter/engine#49980)
2024-02-02 98614782+auto-submit[bot]@users.noreply.github.com Reverts
"Add the focus state related methods to the platform dispatcher"
(flutter/engine#50268)

If this roll has caused a breakage, revert this CL and stop the roller
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https://github.com/flutter/engine/compare/dd4c79a6c864...b35153d00b2e

2024-02-02 skia-flutter-autoroll@skia.org Manual roll Dart SDK from 82936dcdaf4f to 5a5d4c262200 (2 revisions) (flutter/engine#50264)
2024-02-01 dkwingsmt@users.noreply.github.com Remove number of arguments from defining Dart FFI (flutter/engine#50153)
2024-02-01 32242716+ricardoamador@users.noreply.github.com Refactor the linux_android targets to make use of recent changes to android virtual device params (flutter/engine#50099)
2024-02-01 goderbauer@google.com Re-add tests deleted on accident (flutter/engine#50223)
2024-02-01 30870216+gaaclarke@users.noreply.github.com [Impeller] updated todos from opengles golden work (flutter/engine#50218)
2024-02-01 flar@google.com Get bounds from RTree in DLBuilder::Build() (flutter/engine#50253)
2024-02-01 chinmaygarde@google.com [Impeller] Remove unused define. (flutter/engine#50250)
2024-02-01 tugorez@users.noreply.github.com Add the focus state related methods to the platform dispatcher (flutter/engine#49841)
2024-02-01 jason-simmons@users.noreply.github.com Fix the output paths of the Web esbuild GN template (flutter/engine#50188)
2024-02-01 chinmaygarde@google.com [Impeller] Delete unnecessary special casing for Vulkan in framebuffer fetch. (flutter/engine#50251)

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This implements dual compile via the newly available flutter.js bootstrapping APIs for intelligent build fallback.
* Users can now use the `FlutterLoader.load` API from flutter.js
* Flutter tool injects build info into the `index.html` of the user so that the bootstrapper knows which build variants are available to bootstrap
* The semantics of the `--wasm` flag for `flutter build web` have changed:
  - Instead of producing a separate `build/web_wasm` directory, the output goes to the `build/web` directory like a normal web build
  - Produces a dual build that contains two build variants: dart2wasm+skwasm and dart2js+CanvasKit. The dart2wasm+skwasm will only work on Chrome in a cross-origin isolated context, all other environments will fall back to dart2js+CanvasKit.
  - `--wasm` and `--web-renderer` are now mutually exclusive. Since there are multiple build variants with `--wasm`, the web renderer cannot be expressed via a single command-line flag. For now, we are hard coding what build variants are produced with the `--wasm` flag, but I plan on making this more customizable in the future.
* Build targets now can optionally provide a "build key" which can uniquely identify any specific parameterization of that build target. This way, the build target can invalidate itself by changing its build key. This works a bit better than just stuffing everything into the environment defines because (a) it doesn't invalidate the entire build, just the targets which are affected and (b) settings for multiple build variants don't translate well to the flat map of environment defines.

Reland https://github.com/flutter/flutter/pull/141818 with a fix for a special case: If only `background` is specified for `TextButton.styleFrom` or `OutlinedButton.styleFrom` it applies the button's disabled state, i.e. as if the same value had been specified for disabledBackgroundColor.

The change relative to #141818 is the indicated line below:
```dart
final MaterialStateProperty<Color?>? backgroundColorProp = switch ((backgroundColor, disabledBackgroundColor)) {
  (null, null) => null,
  (_, null) => MaterialStatePropertyAll<Color?>(backgroundColor), // ADDED THIS LINE
  (_, _) => _TextButtonDefaultColor(backgroundColor, disabledBackgroundColor),
};
  ```

This backwards incompatibility cropped up in an internal test, see internal Google issue b/323399158.

Changes to use the proto.textpb config file as the version of the emulator device and show the cipd dependency version in the dependencies so devs know it can be updated.

*List which issues are fixed by this PR. You must list at least one issue. An issue is not required if the PR fixes something trivial like a typo.*
Fixes https://github.com/flutter/flutter/issues/142261

*If you had to change anything in the [flutter/tests] repo, include a link to the migration guide as per the [breaking change policy].*

Context: Follow up from sync with @itsjustkevin today. Tag and ping the actor of workflow, when the cherry pick pull request is successfully created.

1. actor of workflow will be the username of the user that triggered the initial workflow run. i.e., whoever labels the PR. This person might not necessarily be the author of the cherry pick PR.
2. PR number of newly created cherry pick PR is parsed from the output of "gh pr create" as a multi line string.

Tested: on cp success: https://github.com/flutter/flutter/pull/142674 pings the actor of workflow (not the pr author). on cp failure: [example workflow](https://github.com/XilaiZhang/miscellaneous-side-project/actions/runs/7734400373/job/21088324523) leaves a msg on the original PR.

<!-- meta-tags: To be used by the automation script only, DO NOT MODIFY.
{
  "name": "Linux_android_emu android views"
}
-->
The test has been passing for [50 consecutive runs](https://data.corp.google.com/sites/flutter_infra_metrics_datasite/flutter_check_test_flakiness_status_dashboard/?p=BUILDER_NAME:%22Linux_android_emu%20android%20views%22).
This test can be marked as unflaky.

This PR is step 5 in the journey to solve issue #136139 and make the entire Flutter repo more readable.

(previous pull requests: #139048, #139882, #141591, #142279)

The current focus is on `packages/flutter/lib/src/material/`.  
The previous PR covered files in this directory starting with `a`, `b`, and `c`; this pull request is for `d` through `m`.

https://github.com/flutter/engine/compare/9beb7e82e081...dd4c79a6c864

2024-02-01 bdero@google.com [Impeller] Replace stencil pipeline ops with enum. (flutter/engine#50231)

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Write Tests for API Example of `form.0.dart`.

Part of #130459

When the Dart VM is not found within 10 minutes in CI on CoreDevices (iOS 17+), stop the app and upload the logs from DerivedData. The app has to be stopped first since the logs are not put in DerivedData until it's stopped.

Also, rearranged some logic to have CoreDevice have its own function for Dart VM url discovery.

Debugging for https://github.com/flutter/flutter/issues/142448.

On the beta branch:
```
Verifying the code signature of /Users/m/Projects/flutter/bin/cache/artifacts/engine/ios-profile/extension_safe/Flutter.xcframework
Verifying the code signature of /Users/m/Projects/flutter/bin/cache/artifacts/engine/ios-profile/Flutter.xcframework
Verifying the code signature of /Users/m/Projects/flutter/bin/cache/artifacts/engine/ios/extension_safe/Flutter.xcframework
Verifying the code signature of /Users/m/Projects/flutter/bin/cache/artifacts/engine/ios/Flutter.xcframework
Verifying the code signature of /Users/m/Projects/flutter/bin/cache/artifacts/engine/ios-release/extension_safe/Flutter.xcframework
Verifying the code signature of /Users/m/Projects/flutter/bin/cache/artifacts/engine/ios-release/Flutter.xcframework
```

Fixes https://github.com/flutter/flutter/issues/140934

This PR improves the gen_defaults tests to not be tied to a particular order of execution.
Since there is a global class that holds the state of the used/not used tokens, we need to clear this logger before each test.

Fixes https://github.com/flutter/flutter/issues/142716

cc @zanderso @QuncCccccc 

*If you had to change anything in the [flutter/tests] repo, include a link to the migration guide as per the [breaking change policy].*

Reverts flutter/flutter#141818
Initiated by: XilaiZhang
This change reverts the following previous change:
Original Description:
Fixes https://github.com/flutter/flutter/issues/139456, https://github.com/flutter/flutter/issues/130335, https://github.com/flutter/flutter/issues/89563.

Two new properties have been added to ButtonStyle to make it possible to insert arbitrary state-dependent widgets in a button's background or foreground. These properties can be specified for an individual button, using the style parameter, or for all buttons using a button theme's style parameter.

The new ButtonStyle properties are `backgroundBuilder` and `foregroundBuilder` and their (function) types are:

```dart
typedef ButtonLayerBuilder = Widget Function(
  BuildContext context,
  Set<MaterialState> states,
  Widget? child
);
```

The new builder functions are called whenever the button is built and the `states` parameter communicates the pressed/hovered/etc state fo the button.

## `backgroundBuilder`

Creates a widget that becomes the child of the button's Material and whose child is the rest of the button, including the button's `child` parameter.  By default the returned widget is clipped to the Material's ButtonStyle.shape.

The `backgroundBuilder` can be used to add a gradient to the button's background. Here's an example that creates a yellow/orange gradient background:

![opaque-gradient-bg](https://github.com/flutter/flutter/assets/1377460/80df8368-e7cf-49ef-aee7-2776a573644c)

```dart
TextButton(
  onPressed: () {},
  style: TextButton.styleFrom(
    backgroundBuilder: (BuildContext context, Set<MaterialState> states, Widget? child) {
      return DecoratedBox(
        decoration: BoxDecoration(
          gradient: LinearGradient(colors: [Colors.orange, Colors.yellow]),
        ),
        child: child,
      );
    },
  ),
  child: Text('Text Button'),
)
```

Because the background widget becomes the child of the button's Material, if it's opaque (as it is in this case) then it obscures the overlay highlights which are painted on the button's Material. To ensure that the highlights show through one can decorate the background with an `Ink` widget.  This version also overrides the overlay color to be (shades of) red, because that makes the highlights look a little nicer with the yellow/orange background.

![ink-gradient-bg](https://github.com/flutter/flutter/assets/1377460/68a49733-f30e-44a1-a948-dc8cc95e1716)

```dart
TextButton(
  onPressed: () {},
  style: TextButton.styleFrom(
    overlayColor: Colors.red,
    backgroundBuilder: (BuildContext context, Set<MaterialState> states, Widget? child) {
      return Ink(
        decoration: BoxDecoration(
          gradient: LinearGradient(colors: [Colors.orange, Colors.yellow]),
        ),
        child: child,
      );
    },
  ),
  child: Text('Text Button'),
)
```

Now the button's overlay highlights are painted on the Ink widget. An Ink widget isn't needed if the background is sufficiently translucent. This version of the example creates a translucent backround widget. 

![translucent-graident-bg](https://github.com/flutter/flutter/assets/1377460/3b016e1f-200a-4d07-8111-e20d29f18014)

```dart
TextButton(
  onPressed: () {},
  style: TextButton.styleFrom(
    overlayColor: Colors.red,
    backgroundBuilder: (BuildContext context, Set<MaterialState> states, Widget? child) {
      return DecoratedBox(
        decoration: BoxDecoration(
          gradient: LinearGradient(colors: [
            Colors.orange.withOpacity(0.5),
            Colors.yellow.withOpacity(0.5),
          ]),
        ),
        child: child,
      );
    },
  ),
  child: Text('Text Button'),
)
```

One can also decorate the background with an image. In this example, the button's background is an burlap texture image. The foreground color has been changed to black to make the button's text a little clearer relative to the mottled brown backround.

![burlap-bg](https://github.com/flutter/flutter/assets/1377460/f2f61ab1-10d9-43a4-bd63-beecdce33b45)

```dart
TextButton(
  onPressed: () {},
  style: TextButton.styleFrom(
    foregroundColor: Colors.black,
    backgroundBuilder: (BuildContext context, Set<MaterialState> states, Widget? child) {
      return Ink(
        decoration: BoxDecoration(
          image: DecorationImage(
            image: NetworkImage(burlapUrl),
            fit: BoxFit.cover,
          ),
        ),
        child: child,
      );
    },
  ),
  child: Text('Text Button'),
)
```

The background widget can depend on the `states` parameter. In this example the blue/orange gradient flips horizontally when the button is hovered/pressed.

![gradient-flip](https://github.com/flutter/flutter/assets/1377460/c6c6fe26-ae47-445b-b82d-4605d9583bd8)

```dart
TextButton(
  onPressed: () {},
  style: TextButton.styleFrom(
    backgroundBuilder: (BuildContext context, Set<MaterialState> states, Widget? child) {
      final Color color1 = Colors.blue.withOpacity(0.5);
      final Color color2 = Colors.orange.withOpacity(0.5);
      return DecoratedBox(
        decoration: BoxDecoration(
          gradient: LinearGradient(
            colors: switch (states.contains(MaterialState.hovered)) {
              true => <Color>[color1, color2],
              false => <Color>[color2, color1],
            },
          ),
        ),
        child: child,
      );
    },
  ),
  child: Text('Text Button'),
)
```

The preceeding examples have not included a BoxDecoration border because ButtonStyle already supports `ButtonStyle.shape` and `ButtonStyle.side` parameters that can be uesd to define state-dependent borders. Borders defined with the ButtonStyle side parameter match the button's shape. To add a border that changes color when the button is hovered or pressed, one must specify the side property using `copyWith`, since there's no `styleFrom` shorthand for this case.

![border-gradient-bg](https://github.com/flutter/flutter/assets/1377460/63cffcd3-0dcf-4eb1-aed5-d14adf1e57f6)

```dart
TextButton(
  onPressed: () {},
  style: TextButton.styleFrom(
    foregroundColor: Colors.indigo,
    backgroundBuilder: (BuildContext context, Set<MaterialState> states, Widget? child) {
      final Color color1 = Colors.blue.withOpacity(0.5);
      final Color color2 = Colors.orange.withOpacity(0.5);
      return DecoratedBox(
        decoration: BoxDecoration(
          gradient: LinearGradient(
            colors: switch (states.contains(MaterialState.hovered)) {
              true => <Color>[color1, color2],
              false => <Color>[color2, color1],
            },
          ),
        ),
        child: child,
      );
    },
  ).copyWith(
    side: MaterialStateProperty.resolveWith<BorderSide?>((Set<MaterialState> states) {
      if (states.contains(MaterialState.hovered)) {
        return BorderSide(width: 3, color: Colors.yellow);
      }
      return null; // defer to the default
    }),
  ),
  child: Text('Text Button'),
)
```

Although all of the examples have created a ButtonStyle locally and only applied it to one button, they could have configured the `ThemeData.textButtonTheme` instead and applied the style to all TextButtons. And, of course, all of this works for all of the ButtonStyleButton classes, not just TextButton.

## `foregroundBuilder`

Creates a Widget that contains the button's child parameter. The returned widget is clipped by the button's [ButtonStyle.shape] inset by the button's [ButtonStyle.padding] and aligned by the button's [ButtonStyle.alignment].

The `foregroundBuilder` can be used to wrap the button's child, e.g. with a border or a `ShaderMask` or as a state-dependent substitute for the child.

This example adds a border that's just applied to the child. The border only appears when the button is hovered/pressed.

![border-fg](https://github.com/flutter/flutter/assets/1377460/687a3245-fe68-4983-a04e-5fcc77f8aa21)

```dart
ElevatedButton(
  onPressed: () {},
  style: ElevatedButton.styleFrom(
    foregroundBuilder: (BuildContext context, Set<MaterialState> states, Widget? child) {
      final ColorScheme colorScheme = Theme.of(context).colorScheme;
      return DecoratedBox(
        decoration: BoxDecoration(
          border: states.contains(MaterialState.hovered)
            ? Border(bottom: BorderSide(color: colorScheme.primary))
            : Border(), // essentially "no border"
        ),
        child: child,
      );
    },
  ),
  child: Text('Text Button'),
)
```

The foregroundBuilder can be used with `ShaderMask` to change the way the button's child is rendered. In this example the ShaderMask's gradient causes the button's child to fade out on top.

![shader_mask_fg](https://github.com/flutter/flutter/assets/1377460/54010f24-e65d-4551-ae58-712135df3d8d)

```dart
ElevatedButton(
  onPressed: () { },
  style: ElevatedButton.styleFrom(
    foregroundBuilder: (BuildContext context, Set<MaterialState> states, Widget? child) {
      final ColorScheme colorScheme = Theme.of(context).colorScheme;
      return ShaderMask(
        shaderCallback: (Rect bounds) {
          return LinearGradient(
            begin: Alignment.bottomCenter,
            end: Alignment.topCenter,
            colors: <Color>[
              colorScheme.primary,
              colorScheme.primaryContainer,
            ],
          ).createShader(bounds);
        },
        blendMode: BlendMode.srcATop,
        child: child,
      );
    },
  ),
  child:  const Text('Elevated Button'),
)
```

A commonly requested configuration for butttons has the developer provide images, one for pressed/hovered/normal state. You can use the foregroundBuilder to create a button that fades between a normal image and another image when the button is pressed. In this case the foregroundBuilder doesn't use the child it's passed, even though we've provided the required TextButton child parameter.

![image-button](https://github.com/flutter/flutter/assets/1377460/f5b1a22f-43ce-4be3-8e70-06de4c958380)

```dart
TextButton(
  onPressed: () {},
  style: TextButton.styleFrom(
    foregroundBuilder: (BuildContext context, Set<MaterialState> states, Widget? child) {
      final String url = states.contains(MaterialState.pressed) ? smiley2Url : smiley1Url;
      return AnimatedContainer(
        width: 100,
        height: 100,
        duration: Duration(milliseconds: 300),
        decoration: BoxDecoration(
          image: DecorationImage(
            image: NetworkImage(url),
            fit: BoxFit.contain,
          ),
        ),
      );
    },
  ),
  child: Text('No Child'),
)
```

In this example the button's default overlay appears when the button is hovered and pressed. Another image can be used to indicate the hovered state and the default overlay can be defeated by specifying `Colors.transparent` for the `overlayColor`:

![image-per-state](https://github.com/flutter/flutter/assets/1377460/7ab9da2f-f661-4374-b395-c2e0c7c4cf13)

```dart
TextButton(
  onPressed: () {},
  style: TextButton.styleFrom(
    overlayColor: Colors.transparent,
    foregroundBuilder: (BuildContext context, Set<MaterialState> states, Widget? child) {
      String url = states.contains(MaterialState.hovered) ? smiley3Url : smiley1Url;
      if (states.contains(MaterialState.pressed)) {
        url = smiley2Url;
      }
      return AnimatedContainer(
        width: 100,
        height: 100,
        duration: Duration(milliseconds: 300),
        decoration: BoxDecoration(
          image: DecorationImage(
            image: NetworkImage(url),
            fit: BoxFit.contain,
          ),
        ),
      );
    },
  ),
  child: Text('No Child'),
)
```

https://github.com/flutter/engine/compare/39415c3eed42...9beb7e82e081

2024-02-01 30870216+gaaclarke@users.noreply.github.com [Impeller] new blur: round downsample to power of two (flutter/engine#50245)
2024-02-01 john@johnmccutchan.com Provide a more helpful error message in the case of UnsatisfiedLinkError (flutter/engine#50247)
2024-02-01 jonahwilliams@google.com Update expected golden number. (flutter/engine#50249)
2024-02-01 jonahwilliams@google.com [Impeller] remove drawPicture from Aiks Canvas. (flutter/engine#50242)
2024-02-01 737941+loic-sharma@users.noreply.github.com Reland "[Windows] Introduce egl::Surface and egl::WindowSurface" (flutter/engine#50148)

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Please CC matanl@google.com,rmistry@google.com,zra@google.com on the revert to ensure that a human
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To file a bug in Flutter: https://github.com/flutter/flutter/issues/new/choose

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Documentation for the AutoRoller is here:
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Flag removed in recipe https://flutter-review.googlesource.com/c/recipes/+/46722

https://github.com/flutter/engine/compare/8c43332c6ffc...39415c3eed42

2024-02-01 30870216+gaaclarke@users.noreply.github.com [Impeller] added an assert that goldens are generated (flutter/engine#50222)

If this roll has caused a breakage, revert this CL and stop the roller
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To file a bug in Flutter: https://github.com/flutter/flutter/issues/new/choose

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Documentation for the AutoRoller is here:
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https://github.com/flutter/flutter/issues/129836 was closed in October.

CI is running Xcode 15, remove outdated arm64_armv7 framework checks.

This PR fixes CupertinoTabView's handling of Android back button with PopScope and nested navigators by calling `NavigatorState.maybePop` instead of `NavigatorState.pop`, so that the Navigator pops only when it should.

Fix #139050

https://github.com/flutter/engine/compare/68943afd62d1...8c43332c6ffc

2024-02-01 zanderso@users.noreply.github.com Moves impeller/golden_tests_harvester to tools/golden_tests_harvester (flutter/engine#50211)
2024-02-01 skia-flutter-autoroll@skia.org Roll Skia from 2386d5077ec5 to cdf214adfb4d (2 revisions) (flutter/engine#50239)
2024-02-01 skia-flutter-autoroll@skia.org Roll Skia from 20578fecfc37 to 2386d5077ec5 (2 revisions) (flutter/engine#50238)
2024-02-01 skia-flutter-autoroll@skia.org Roll Skia from 756276a133b1 to 20578fecfc37 (1 revision) (flutter/engine#50236)
2024-02-01 skia-flutter-autoroll@skia.org Roll Fuchsia Linux SDK from nymRxHV9Shod7cyLe... to kvEXgoydRYnW3UvX2... (flutter/engine#50235)
2024-02-01 bdero@google.com [Impeller] Assign incremental clip depth to all entities. (flutter/engine#49828)
2024-02-01 skia-flutter-autoroll@skia.org Roll Skia from 505d22d0ecdc to 756276a133b1 (3 revisions) (flutter/engine#50232)
2024-02-01 skia-flutter-autoroll@skia.org Roll Skia from bcbc172f74da to 505d22d0ecdc (1 revision) (flutter/engine#50230)

Also rolling transitive DEPS:
  fuchsia/sdk/core/linux-amd64 from nymRxHV9Shod to kvEXgoydRYnW

If this roll has caused a breakage, revert this CL and stop the roller
using the controls here:
https://autoroll.skia.org/r/flutter-engine-flutter-autoroll
Please CC matanl@google.com,rmistry@google.com,zra@google.com on the revert to ensure that a human
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To file a bug in Flutter: https://github.com/flutter/flutter/issues/new/choose

To report a problem with the AutoRoller itself, please file a bug:
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Documentation for the AutoRoller is here:
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Fixes https://github.com/flutter/flutter/issues/140169

https://github.com/flutter/flutter/issues/142716

For https://github.com/flutter/flutter/issues/142716

https://github.com/flutter/engine/compare/f4fbabf1eb9f...68943afd62d1

2024-02-01 jason-simmons@users.noreply.github.com [Impeller] Clear the GPUTracerVK in_frame flag when ending a frame even if the tracer is disabled (flutter/engine#50228)
2024-02-01 98614782+auto-submit[bot]@users.noreply.github.com Reverts "Remove migration flag and unused header files" (flutter/engine#50229)
2024-02-01 jonahwilliams@google.com [Impeller] size vk swapchain to window size. (flutter/engine#50205)
2024-02-01 robert.ancell@canonical.com Remove string field from FlKeyEvent (flutter/engine#50189)
2024-02-01 skia-flutter-autoroll@skia.org Roll Skia from 19e5e8f089b2 to bcbc172f74da (2 revisions) (flutter/engine#50226)
2024-02-01 matanlurey@users.noreply.github.com Ignore CRLF endings when determining the names of header guards. (flutter/engine#50227)
2024-02-01 jonahwilliams@google.com [Impeller] make GPU tracing off by default. (flutter/engine#50215)
2024-02-01 dkwingsmt@users.noreply.github.com Multiview: Add view ID to _render and remove render rule skipping (flutter/engine#50220)
2024-02-01 31859944+LongCatIsLooong@users.noreply.github.com Remove migration flag and unused header files (flutter/engine#50216)

If this roll has caused a breakage, revert this CL and stop the roller
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Please CC matanl@google.com,rmistry@google.com,zra@google.com on the revert to ensure that a human
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To file a bug in Flutter: https://github.com/flutter/flutter/issues/new/choose

To report a problem with the AutoRoller itself, please file a bug:
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Documentation for the AutoRoller is here:
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This PR is to add 19 new `ColorScheme` roles following the Material Design 3 specs. This PR doesn't apply the new colors to `ThemeData`  or any widgets.

This PR is created to split the big change in #138521, once this is merged, another PR that contains the rest of the changes(apply new color roles to widgets and deprecate 3 more colors) will follow.

**Tone-based surface colors** (7 colors): 
* surfaceBright
* surfaceDim
* surfaceContainer
* surfaceContainerLowest
* surfaceContainerLow
* surfaceContainerHigh
* surfaceContainerHighest

**Accent color add-ons** (12 colors):
* primary/secondary/tertiary-Fixed
* primary/secondary/tertiary-FixedDim
* onPrimary/onSecondary/onTertiary-Fixed
* onPrimary/onSecondary/onTertiary-FixedVariant

Please checkout this [design doc](https://docs.google.com/document/d/1ODqivpM_6c490T4j5XIiWCDKo5YqHy78YEFqDm4S8h4/edit?usp=sharing) for more information:)

Resolves https://github.com/flutter/flutter/issues/137700.

In particular, see [this comment from the thread](https://github.com/flutter/flutter/issues/137700#issuecomment-1920241979) to see exactly what this PR is addressing.

https://github.com/flutter/engine/compare/c4247c5e31ba...f4fbabf1eb9f

2024-01-31 chinmaygarde@google.com [Impeller] Implement framebuffer-fetch via subpasses in Vulkan without extensions. (flutter/engine#50154)

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To file a bug in Flutter: https://github.com/flutter/flutter/issues/new/choose

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Documentation for the AutoRoller is here:
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https://github.com/flutter/engine/compare/c83617eee093...c4247c5e31ba

2024-01-31 amyles@google.com Make screen reader announcement append a non-breaking space every other message. (flutter/engine#50151)
2024-01-31 skia-flutter-autoroll@skia.org Roll Skia from 0ad5b2a9cebd to 19e5e8f089b2 (3 revisions) (flutter/engine#50214)
2024-01-31 1961493+harryterkelsen@users.noreply.github.com [CanvasKit] Only render one frame at a time. (flutter/engine#50055)

If this roll has caused a breakage, revert this CL and stop the roller
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To file a bug in Flutter: https://github.com/flutter/flutter/issues/new/choose

To report a problem with the AutoRoller itself, please file a bug:
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Documentation for the AutoRoller is here:
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We're going to disable GPU tracing by default. Opt our benchmarks back in so that we have continuity.

## Description

This changes the factory constructors for `TextButton.icon`, `ElevatedButton.icon`, `FilledButton.icon`, and `FilledButton.tonalIcon` to take nullable icons. If the icon is null, then the "regular" version of the button is created.

## Tests
 - Added tests for all four constructors.

The regular chip and the action chip templates were referencing non existent M3 design tokens.

Fixes https://github.com/flutter/flutter/issues/141288

The `ActionChip` doesn't have any visual difference. Even though the template and file changes, the default `labelStyle` color already uses `onSurface`.
For the reviewer, I've changed the `action_chip_test` to expect a color from the colorScheme so that it is more explicit that the color might not be the same as the labelLarge default in the global textTheme, even if for this case the color is the same.

The regular `Chip` does have visual differences, in particular, the label and trailing icon colors, which were not following the specification. In order to fix this, the regular chip now is based from the `filter-chip` spec as described in the linked issue.

## Before

![image](https://github.com/flutter/flutter/assets/22084723/d602ef42-625a-4b5c-b63b-c46cb2070d80)

## After

![image](https://github.com/flutter/flutter/assets/22084723/dddb754f-fd29-4c4c-96cc-e7f508219f12)