* Crash when a TabBar is put in a BottomAppBar.

* Tabs bugs (e.g. crash on transparent material)

- Tabs would crash when placed on transparent Materials
- Tabs would fail to render the child if an icon was specified

https://github.com/flutter/engine/compare/e7eb1c8bf655...74839e207b48

git log e7eb1c8bf65531195fc76ba96c8fc8478ac5f554..74839e207b482e7a47eae8af73ffa1e23f8e8355 --no-merges --oneline
74839e207 Roll src/third_party/skia 8c14038e56c3..d7a5a1d27e1d (5 commits) (flutter/engine#7683)
615ca598d Roll src/third_party/skia 69130631e23d..8c14038e56c3 (1 commits) (flutter/engine#7682)
482e43faf Roll src/third_party/skia 21ca3702f8eb..69130631e23d (2 commits) (flutter/engine#7681)
cc349a36e Roll src/third_party/skia b45f47dc3ef5..21ca3702f8eb (1 commits) (flutter/engine#7680)
26b83393b Roll src/third_party/skia 9c7a006a8e2d..b45f47dc3ef5 (1 commits) (flutter/engine#7679)
940b42030 Roll src/third_party/skia 32d8cce070dd..9c7a006a8e2d (1 commits) (flutter/engine#7677)
0a9dadb04 Roll src/third_party/skia 71e434dc9dea..32d8cce070dd (1 commits) (flutter/engine#7675)
6266da8e6 Roll src/third_party/skia d396dd0347d3..71e434dc9dea (1 commits) (flutter/engine#7674)
94ec2c55c Roll src/third_party/skia 0d84e805c30c..d396dd0347d3 (1 commits) (flutter/engine#7673)
48055b102 Roll src/third_party/skia 48913465db5f..0d84e805c30c (1 commits) (flutter/engine#7672)
7f9d59cb0 Roll src/third_party/skia d6a45a8aee6e..48913465db5f (1 commits) (flutter/engine#7671)
3f4ac2bac Roll src/third_party/skia 8ec9a60bdb6f..d6a45a8aee6e (2 commits) (flutter/engine#7670)
b00c7c87f Roll src/third_party/skia 72c687807f5e..8ec9a60bdb6f (2 commits) (flutter/engine#7669)
1b6f1397c Roll src/third_party/skia 8f5aeebdd8eb..72c687807f5e (3 commits) (flutter/engine#7668)
637fadba7 Roll src/third_party/skia 3ed198faf93a..8f5aeebdd8eb (8 commits) (flutter/engine#7667)
1b657855e Add kernel-worker and dart2js to BUILD.gn (flutter/engine#7660)
1cf606148 Roll src/third_party/skia 5892553ad020..3ed198faf93a (3 commits) (flutter/engine#7666)
377e665e4 Roll src/third_party/skia 569dda7216cd..5892553ad020 (5 commits) (flutter/engine#7665)
44245c8e7 Roll src/third_party/skia 72a0e3347cdf..569dda7216cd (1 commits) (flutter/engine#7664)
80db23fb7 Roll src/third_party/skia ae64f52786b3..72a0e3347cdf (2 commits) (flutter/engine#7663)
4889c743c Roll src/third_party/skia 95b014790f93..ae64f52786b3 (3 commits) (flutter/engine#7662)
fac24d938 Roll src/third_party/skia 88bfed46ab6e..95b014790f93 (3 commits) (flutter/engine#7661)
5dcf3cfd2 Roll src/third_party/skia 5b257abb87d2..88bfed46ab6e (8 commits) (flutter/engine#7657)
93452747f Initial import of FDE macOS framework (flutter/engine#7642)
54f546715 Roll src/third_party/skia 1bd245b91801..5b257abb87d2 (5 commits) (flutter/engine#7656)
e71daf6cf Roll src/third_party/skia ea2dc6a6bc11..1bd245b91801 (1 commits) (flutter/engine#7655)
4f5e1709b Roll src/third_party/skia e9742a5a0db1..ea2dc6a6bc11 (1 commits) (flutter/engine#7654)
ef1a7f8ce Roll src/third_party/skia 8a484d0203d9..e9742a5a0db1 (2 commits) (flutter/engine#7653)
28339c864 Roll src/third_party/skia b7af275ebbf5..8a484d0203d9 (3 commits) (flutter/engine#7652)
7fa77ef03 Fix two typos in embedder docs (flutter/engine#7649)
e9419bf6d Roll src/third_party/skia 9c8ad0316147..b7af275ebbf5 (3 commits) (flutter/engine#7650)
b94e759b2 Expose the Flutter engine, Dart and Skia versions to Dart. (flutter/engine#7634)
64e17076c Document make_resource_current on FlutterOpenGLRendererConfig and warn if the callback is not set. (flutter/engine#7648)

The AutoRoll server is located here: https://autoroll.skia.org/r/flutter-engine-flutter-autoroll

Documentation for the AutoRoller is here:
https://skia.googlesource.com/buildbot/+/master/autoroll/README.md

If the roll is causing failures, please contact the current sheriff (dnfield@google.com), and stop
the roller if necessary.

* Support using flutter with specific version

* Set min supported version to 1.2.1

Integrate Strut: Add StrutStyle, expose Strut API, wire up strut with dart:ui, Roll engine 31a7f4d..e7eb1c8 (7 commits) (#26332)

Includes a breaking change to dart:ui ParagraphStyle where lineHeight is renamed to height for consistency with TextStyle.

* Expose "center" on CustomScrollView

* Also support anchor

Allow the theme to provide these values to Chips

* Ensure Shrine app repsects the platform toggle from Gallery options

* Retrigger CI

* Retrigger CI again

The new parameter defines the color of the checkbox's check mark. Default is (still) white.

Additionally, fix the status bar color for the login screen

Closes #26034 

Expose elevation on chips and allow for it to be customized by the developer.

* Don't send accept/reject if compilation never started.

Ensure that we wait for reject's response since that is async operation.

Fixes https://github.com/flutter/flutter/issues/27120.

* Fix analysis errors

* Rename flag. Ensure we raise it on first compilation too.

Create a slider shape for custom track, tick mark, and overlay painting, for the material slider.

* Remove stray extra space

* Add ImageStreamCompleter.hasListeners (and cleanup)

This is mostly just some cleanup of stuff I ran into, but it makes
`hasListeners` protected on `ImageStreamCompleter`, because otherwise
there's no way to track if listeners are registered or not.

* Address review comments

15f2b92cc Roll src/third_party/skia 673a048b209c..70ebd9ca0616 (8 commits) (flutter/engine#7641) (#27313)


https://github.com/flutter/engine/compare/31a7f4d5205d...15f2b92cce91

git log 31a7f4d5205df9d73fcdc148940d65d0efe55d95..15f2b92cce916982b7dd8ce658bbf2a465c06ba4 --no-merges --oneline
15f2b92cc Roll src/third_party/skia 673a048b209c..70ebd9ca0616 (8 commits) (flutter/engine#7641)

The AutoRoll server is located here: https://autoroll.skia.org/r/flutter-engine-flutter-autoroll

Documentation for the AutoRoller is here:
https://skia.googlesource.com/buildbot/+/master/autoroll/README.md

If the roll is causing failures, please contact the current sheriff (dnfield@google.com), and stop
the roller if necessary.

Add Material/Card borderOnForeground flag to allow border to be painted behind the child widget (#27297)

In certain situations, a developer may require the border of a Material to be painted behind its child. For example a Card widget that has a full width image across the top half. In that scenario, the image should ideally be painted above the border with regards to z-position.

This change exposes a flag on Material widget to achieve this behavior. Additionally, the same flag is exposed on Card widget to allow the Card widget to pass this down to its Material.

I added a couple golden tests to verify this new behavior. Goldens are here:
https://github.com/flutter/goldens/commit/46a3d26acbb1b0d72b6b02c30f03b9dbda7d5bdf

https://github.com/flutter/engine/compare/01b4f4e28065...31a7f4d5205d

git log 01b4f4e280659a7333a77a570ff32122a2d947ad..31a7f4d5205df9d73fcdc148940d65d0efe55d95 --no-merges --oneline
31a7f4d52 Roll src/third_party/dart 2632e201b7..71bee8f05e (1 commits) 71bee8f05e Fix serializing procdure when realClass is Object from dart:core.
ed3ed9bc9 Roll src/third_party/skia c749f3bfd0e3..673a048b209c (1 commits) (flutter/engine#7639)

The AutoRoll server is located here: https://autoroll.skia.org/r/flutter-engine-flutter-autoroll

Documentation for the AutoRoller is here:
https://skia.googlesource.com/buildbot/+/master/autoroll/README.md

If the roll is causing failures, please contact the current sheriff (dnfield@google.com), and stop
the roller if necessary.

Fixes https://github.com/flutter/flutter/issues/25244

Picked up from #22498, originally by @jugyo