20706 Fix race condition and data race in FrameInfoContainsValidWidthAndHeight. (cla: yes)

20708 The ForwardingGestureRecognizers to have back reference to the PlatformViewsController so it can access FlutterViewController when its available  (cla: yes, platform-ios, waiting for tree to go green)

20721 Ensure loop is woken up at the right time (cla: yes)

20722 Enable hybrid composition by default on Android (cla: yes, platform-android)

20733 Pass platform configuration to Dart VM for insecure socket policy (cla: yes, platform-android, platform-ios, waiting for tree to go green)

20735 Fix EGL_BAD_SURFACE when app is paused (cla: yes, platform-android)

20736 Reland: Implement delayed event synthesis key event handling for Android (cla: yes, platform-android)