28159 Prevent app from accessing the GPU in the background in MultiFrameCodec (cla: yes)

28160 Roll Dart SDK from f2b0d387684d to 14549cfda2ea (1 revision) (cla: yes, waiting for tree to go green)

28161 Correct the return value of the method RunInIsolateScope (cla: yes, waiting for tree to go green, needs tests)

28162 Roll Fuchsia Mac SDK from kAQ_HmUN5… to mAEnhH7c-… (cla: yes, waiting for tree to go green)

28163 Roll Skia from f61ec43f84dd to a7ea66372d82 (1 revision) (cla: yes, waiting for tree to go green)