* 9ea2db5ba Add FlMessageCodec, FlBinaryCodec, FlStringCodec (flutter/engine#18186)

* f42275775 Roll src/fuchsia/sdk/linux from MhpFP... to c1q_S... (flutter/engine#18222)

* 2ab918c18 Roll src/third_party/skia a14084ba1b41..8f6c3ed7c7be (1 commits) (flutter/engine#18223)

* 40167b68e Make robolectric tests run against SDK 29 by default (flutter/engine#17996)

* e5b0db6b0 Roll src/third_party/skia 8f6c3ed7c7be..b55372444d1b (4 commits) (flutter/engine#18224)

* ed08c3e2a Roll src/fuchsia/sdk/mac from 4MCVP... to T5tT0... (flutter/engine#18228)

* 67675173b Roll src/third_party/skia b55372444d1b..ac09f7cd7a28 (2 commits) (flutter/engine#18229)

* 983de2c40 Remove pipeline in favor of layer tree holder (flutter/engine#17688)

* a1218dd3c Roll src/third_party/skia ac09f7cd7a28..c683912173bb (2 commits) (flutter/engine#18230)

* 68bf13763 skip painting clipped out pictures (flutter/engine#18204)

* 703525502 make compiler worker count configurable (flutter/engine#17616)

* c8ff03cac Publish validation layer deps as part of the fuchsia artifacts (flutter/engine#18214)

* 576f0e1f9 Roll src/third_party/skia c683912173bb..7359165e660c (1 commits) (flutter/engine#18234)

* 1b3b4ec88 skip font loading tests for safari (flutter/engine#18232)

* 9319d7c26 Roll src/third_party/skia 7359165e660c..6913d1bb1d7a (1 commits) (flutter/engine#18237)

* 1b56f35d4 Roll src/third_party/dart 617bc54b715d..2a14a62112e6 (30 commits) (flutter/engine#18239)

* ff6942f57 Add fontFeatures and decorationThickness to textstyle (flutter/engine#18235)

* 4418ce882 Revert "Remove pipeline in favor of layer tree holder (#17688)" (flutter/engine#18242)

* 9d8daf238 Roll src/third_party/skia 6913d1bb1d7a..bf1904fd4898 (3 commits) (flutter/engine#18243)

* Updated bin/internal/fuchsia-linux.version

* Updated bin/internal/fuchsia-mac.version

This reverts commit d5634982.

This reverts commit f865ac7e.

The default for build for flutter build ios should be release to match the other build commands. This is correctly handled in the command, but the documentation is incorrect. Update the documentation and the default to reflect the more common case of building for a physical device.

* Expose includeSemantics option to RawKeyboardListener

* Revert "Expose includeSemantics option to RawKeyboardListener"

This reverts commit 684edccfb0bacb358285b34b7a6dafd45a070ca7.

* Set includeSemantics to false

* Expose includeSemantics for RawKeyboardListener

* Add test

The test has been consistently green for the last few commits.

Unreverts #54902 with fixes for a failing integration test.

Avoid calling `builder` in `ConstrainedLayoutBuilder` when layout constraints are the same.

[Design doc](flutter.dev/go/layout-builder-optimization).

## Related Issues

Fixes https://github.com/flutter/flutter/issues/6469

* [flutter_tools] integration l10n tool

* add runtime skip to build system

* Update build_system.dart

* add links to issues, comments

* Update packages/flutter_tools/test/general.shard/build_system/build_system_test.dart
Co-authored-by: Shi-Hao Hong <shihaohong@google.com>

* Update packages/flutter_tools/lib/src/build_system/targets/localizations.dart
Co-authored-by: Shi-Hao Hong <shihaohong@google.com>

* Update localizations.dart

* switch to gen_l10n localizations

* fix tests
Co-authored-by: Shi-Hao Hong <shihaohong@google.com>

This engine version contains the Dart SDK that has been unforked for the
null-safety feature.

9b905d3f0 Manual roll of Dart 617bc54b71...39e0e75fcf (#18215)

Enable tree-shake-icons by default for non-web targets. Make missing fonts a status print

7e205b37e Roll src/fuchsia/sdk/mac from 1MVsE... to 4MCVP... (#18217)
9193d8ff8 Roll src/third_party/skia 0dc207f836da..a14084ba1b41 (3 commits) (#18219)
403931ff2 Add FlValue (#18185)
46a6d966a [SkParagraph] Copy text height behavior to the Skia paragraph style (#18178)
e7ee47d91 [web] Implement matrix parameter for linear gradient (#18208)
28d99854a Reland again "Remove layer integral offset snapping #17112" (#18160)
5e361f57d Roll src/third_party/skia c66cd987f7c0..0dc207f836da (5 commits) (#18212)
716dbf00c Refactor GLFW embedding to support headless mode (#18205)
23cca3211 Manual Roll of Dart 39e0e75fcf...ce62ad2e8b (#18211)
15f72b8c0 Support EventChannel C++ plugin API for Linux/Windows (#17015)
e5a7ca577 Handle leak of message handle when no engine present (#18157)
d3bde19c1 add docs to platformviewios (and some drive-by changes) (#17593)
b582d774f Roll src/third_party/skia 0066adefa97d..c66cd987f7c0 (4 commits) (#18206)
5e7d6d05f Roll src/third_party/skia edea19858ccc..0066adefa97d (3 commits) (#18203)
88b9d4240 Remove the global engine entry timestamp (#18182)
0dffdd5de Roll src/third_party/dart e86e4d61834a..ce62ad2e8b40 (13 commits) (#18201)
56fe6d255 Roll src/third_party/skia 2871ab0727bf..edea19858ccc (3 commits) (#18198)
bcdf99121 Fixed ChildSceneLayer elevation issue on Fuchsia. (#18144)
ede658e2d [profiling] CPU Profiling support for iOS (#18087)
d043923d7 Roll src/third_party/skia e3d1de7c5281..2871ab0727bf (1 commits) (#18197)
807f1914e Roll src/third_party/dart 733153eb517c..e86e4d61834a (6 commits) (#18195)
fe3f8df81 Roll src/third_party/skia 3b2db26c59d6..e3d1de7c5281 (4 commits) (#18192)
34b062998 Roll fuchsia/sdk/core/mac-amd64 from jMJqf... to 1MVsE... (#18194)
e9b2afefd Roll fuchsia/sdk/core/linux-amd64 from RpHTv... to MhpFP... (#18191)
35fa00629 Roll src/third_party/skia 88d04cb51acf..3b2db26c59d6 (1 commits) (#18190)
e54bb9e20 Roll src/third_party/dart 4da5b40fb6dc..733153eb517c (23 commits) (#18188)

`assert(app is IOSApp)` fails if `app` is null, and `app` is an
optional argument. `app` is passed to `_IOSSimulatorLogReader`, which
already handles it being null.

Workaround for cached web builds with --[no-]track-widget-creation flags.
Similar PR: #23299