Create a new action triggered when a BeginMainFrame is not expected before vsync

cc/scheduler/scheduler.h

Index: cc/scheduler/scheduler.h
diff --git a/cc/scheduler/scheduler.h b/cc/scheduler/scheduler.h
index d33084c862ba99cbf2156aefee67acbe0b01c9a1..a03f8ac08091ff691d327d12944a03bc18e63886 100644
--- a/cc/scheduler/scheduler.h
+++ b/cc/scheduler/scheduler.h
@@ -48,6 +48,8 @@ class SchedulerClient {
   virtual void ScheduledActionPerformImplSideInvalidation() = 0;
   virtual void DidFinishImplFrame() = 0;
   virtual void SendBeginMainFrameNotExpectedSoon() = 0;
+  virtual void ScheduledActionBeginMainFrameNotExpectedUntil(
+      base::TimeTicks time) = 0;
 
  protected:
   virtual ~SchedulerClient() {}
@@ -197,6 +199,7 @@ class CC_EXPORT Scheduler : public BeginFrameObserverBase {
   void ScheduleBeginImplFrameDeadline();
   void ScheduleBeginImplFrameDeadlineIfNeeded();
   void BeginImplFrameNotExpectedSoon();
+  void BeginMainFrameNotExpectedUntil(base::TimeTicks time);
   void SetupNextBeginFrameIfNeeded();
   void DrawIfPossible();
   void DrawForced();