Update from https://crrev.com/314320

cc/scheduler/scheduler_state_machine.h

Index: cc/scheduler/scheduler_state_machine.h
diff --git a/cc/scheduler/scheduler_state_machine.h b/cc/scheduler/scheduler_state_machine.h
index 9dc7817d473c9ad6ee1c719746ca0dd2293238cd..aa153c6bddcaee0bceb6af5c0656ad33d0f81a1a 100644
--- a/cc/scheduler/scheduler_state_machine.h
+++ b/cc/scheduler/scheduler_state_machine.h
@@ -259,6 +259,8 @@ class CC_EXPORT SchedulerStateMachine {
         impl_latency_takes_priority_on_battery;
   }
 
+  void SetDeferCommits(bool defer_commits);
+
   // TODO(zmo): This is temporary for debugging crbug.com/393331.
   // We should remove it afterwards.
   std::string GetStatesForDebugging() const;
@@ -341,6 +343,7 @@ class CC_EXPORT SchedulerStateMachine {
   bool continuous_painting_;
   bool impl_latency_takes_priority_on_battery_;
   bool children_need_begin_frames_;
+  bool defer_commits_;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(SchedulerStateMachine);