18974 Roll Dart SDK from 2b917f5b6a0e to 0fab083e1c2b (15 revisions) (cla: yes, waiting for tree to go green)

18975 renaming variables on integration tests manager (cla: yes, waiting for tree to go green)

18976 Roll Fuchsia Linux SDK from 8AiUM… to ThzHh… (cla: yes, waiting for tree to go green)

18977 Reland: Add RAII wrapper for EGLSurface (cla: yes, platform-android)

18978 Include the memory header as unique_ptr is used in ASCII Trie. (cla: yes, waiting for tree to go green)

18979 Call Shell::NotifyLowMemoryWarning on Android Trim and LowMemory events (cla: yes, platform-android)