10799 Add a test for creating images from bytes. (cla: yes)

10802 Roll src/third_party/dart f29f41f1a5..3d9a356f6e (65 commits) (cla: yes)

10805 Roll src/third_party/dart 3d9a356f6e..78ce916d82 (7 commits) (cla: yes)

10808 Remove flutter_kernel_sdk dart script (cla: yes)

10809 [dart:zircon] Porting Cache re-usable handle wait objects (cla: yes)

10810 Roll Dart SDK 78ce916d82..15a3bf82cb (cla: yes)

10811 Revert “Remove flutter_kernel_sdk dart script” (cla: yes)