18036 Roll src/third_party/dart 05b7f49c7267..53601ecc18e5 (15 commits) (cla: yes, waiting for tree to go green)

18038 Roll fuchsia/sdk/core/mac-amd64 from 6VJ1C… to WqvOR… (cla: yes, waiting for tree to go green)

18040 [web] Add support for syncing unicode line break properties (cla: yes, platform-web)

18042 Wire up channel for restoration data (cla: yes, platform-android)

18043 Populate window.locale in Dart (cla: yes)

18050 Introduce runtime check that it is root isolate that makes UI native calls. (cla: yes)