See https://github.com/KhronosGroup/Vulkan-Samples/blob/master/samples/performance/layout_transitions/layout_transitions_tutorial.md#transaction-elimination-on-mali-gpus
for an explanation of why transitioning the layout hurts performance
on Mali drivers.
Co-authored-by: NDavid Reveman <reveman@google.com>

Choose a child more likely to remain stable from frame to frame as the target to cache in the OpacityLayer.

This reverts commit 0622b051.

Unblocks: flutter/flutter#57135

Part of https://github.com/flutter/flutter/issues/38478

https://github.com/flutter/flutter/issues/58211 tracks re-enabling these
tests.

flutter/buildroot@6669621484b649b9355fb2dd37950daf3d2ac65b

See flutter/buildroot#372

This reverts commit a095cc23.

* Add mock implementations of the Flutter embedding API and EGL
* Add tests for FlBinaryMessenger, FlBasicMessageChannel, FlMethodChannel

* Add FlTextInputPlugin

The recent refactoring to support headless mode accidentally passed
nullptr instead of the window (if any) to the platform handler that
manages clipboard interactions, causing it to be broken.

Fixes https://github.com/flutter/flutter/issues/58035

The last commit was a bad push -- this one compiles.

Tested: Manual test via workstation product
BUG: 50875

* Add FlPluginRegistry and FlPluginRegistrar

* Fix child removal after reuse by other BitmapCanvas
* Address review comments

This reverts commit 40043b5f.

Tested: Manual test via workstation product
BUG: 50875

- Adds a way to provide an AOT library to the C API.
- Adds app.so to the information provided by DartProject.
- Fixes the engine to only do static snapshot linking for Windows in
  debug mode, not all modes, so that the provided library is used.

Engine side of https://github.com/flutter/flutter/issues/38477

This reverts commit 1166a354.

Reason: breaks dashboard