28383 Started providing the GPU sync switch to Rasterizer.DrawToSurface() (platform-ios, platform-android, cla: yes, platform-fuchsia, embedder)

28407 fuchsia: Fix MissingPluginException being thrown in Dart from platform_view.cc (platform-ios, platform-android, cla: yes, platform-web, platform-macos, platform-linux, platform-windows, platform-fuchsia, needs tests, embedder)

28415 [flutter_releases] Flutter beta 2.5.0-5.3.pre Engine Cherrypicks (platform-ios, platform-android, cla: yes, platform-web)

28418 TextEditingDelta support for iOS (platform-ios, cla: yes, waiting for tree to go green)