25899 Ensure that AutoIsolateShutdown drops its reference to the DartIsolate on the intended task runner (cla: yes, waiting for tree to go green)

25900 Fix composition when multiple platform views and layers are combined  (platform-android, cla: yes, waiting for tree to go green)

25904 Roll Skia from bf688645acf9 to 537293bf155f (1 revision) (cla: yes, waiting for tree to go green)

25905 Roll Skia from 537293bf155f to adadb95a9f1e (1 revision) (cla: yes, waiting for tree to go green)

25907 pull googletest from github instead of fuchsia.googlesource (cla: yes, waiting for tree to go green)