Update from https://crrev.com/306655

Includes updates to ui/ and mojo/services for cc and gpu changes and
a minor update to a unit test in sky/ for skia interface changes.

Review URL: https://codereview.chromium.org/761903003
diff --git a/cc/scheduler/scheduler_state_machine.h b/cc/scheduler/scheduler_state_machine.h
index c69c959..12f8635 100644
--- a/cc/scheduler/scheduler_state_machine.h
+++ b/cc/scheduler/scheduler_state_machine.h
@@ -68,6 +68,7 @@
     COMMIT_STATE_BEGIN_MAIN_FRAME_STARTED,
     COMMIT_STATE_READY_TO_COMMIT,
     COMMIT_STATE_WAITING_FOR_ACTIVATION,
+    COMMIT_STATE_WAITING_FOR_DRAW,
   };
   static const char* CommitStateToString(CommitState state);