[cc] Add and plumb CFS::DidNotProduceFrame.

cc/scheduler/scheduler.h

Index: cc/scheduler/scheduler.h
diff --git a/cc/scheduler/scheduler.h b/cc/scheduler/scheduler.h
index a03f8ac08091ff691d327d12944a03bc18e63886..8d68aa2bed63e8d75b7804ba1bec5b9712766f2a 100644
--- a/cc/scheduler/scheduler.h
+++ b/cc/scheduler/scheduler.h
@@ -47,6 +47,7 @@ class SchedulerClient {
   virtual void ScheduledActionInvalidateCompositorFrameSink() = 0;
   virtual void ScheduledActionPerformImplSideInvalidation() = 0;
   virtual void DidFinishImplFrame() = 0;
+  virtual void BeginFrameDidNotProduceFrame(const BeginFrameAck& ack) = 0;
   virtual void SendBeginMainFrameNotExpectedSoon() = 0;
   virtual void ScheduledActionBeginMainFrameNotExpectedUntil(
       base::TimeTicks time) = 0;