8940 Roll Tonic (cla: yes)

8943 New Plugin API PR2: Introduces ActivityAware, ActivityControlSurface, and ActivityPluginBinding. (cla: yes)

8947 Add @UiThread to MethodChannel and related classes/calls (#32642). (cla: yes)

8949 Copy the Dart Runner from //topaz into the engine. (cla: yes)

8950 Roll tonic and update #includes (cla: yes)

8952 Rename frame_time and engine_time (cla: yes)

8954 Avoid disabling sources assignment filters are these have been removed. (cla: yes)

8956 Use Android text selection shifting API to delete (cla: yes)