7621 Improve PathMetrics (cla: yes)

7628 Check in GEM_HOME for jazzy (cla: yes)

7633 Revert buildtools roll back to bac220c (cla: yes)

7634 Expose the Flutter engine, Dart and Skia versions to Dart. (cla: yes)

7642 Initial import of FDE macOS framework (cla: yes)

7643 Respect default goma path on Windows (cla: yes)

7645 Fix dynamic array -> vector (cla: yes)

7647 Update the verify_exported script to include the symbols for ICU data (cla: yes)

7648 [embedder] Document make_resource_current on FlutterOpenGLRendererConfig and warn if the callback is not set. (cla: yes)