24836 Roll Dart SDK from 4693d6d4f88e to b77641194368 (3 revisions) (cla: yes, waiting for tree to go green)

24838 Prevent race condition while switching surfaces (cla: yes, platform-android)

24839 Roll Dart SDK from b77641194368 to fee865ec6404 (1 revision) (cla: yes, waiting for tree to go green)

24841 Roll Fuchsia Mac SDK from PPdB-GHCt… to Xkten1Nxc… (cla: yes, waiting for tree to go green)

24842 Roll Fuchsia Linux SDK from Suchs2RGt… to 4_MXZyYYE… (cla: yes, waiting for tree to go green)