Revert of cc: Adding DidFinishImplFrame to LTHI.

cc/trees/single_thread_proxy.h

Index: cc/trees/single_thread_proxy.h
diff --git a/cc/trees/single_thread_proxy.h b/cc/trees/single_thread_proxy.h
index 98ac5e5c7d40ae7bae0ea8b9e0740e865f6068eb..a148fef46e299101b669597fbbb8359d61956fcd 100644
--- a/cc/trees/single_thread_proxy.h
+++ b/cc/trees/single_thread_proxy.h
@@ -66,7 +66,6 @@
 
   // SchedulerClient implementation
   void WillBeginImplFrame(const BeginFrameArgs& args) override;
-  void DidFinishImplFrame() override;
   void ScheduledActionSendBeginMainFrame() override;
   DrawResult ScheduledActionDrawAndSwapIfPossible() override;
   DrawResult ScheduledActionDrawAndSwapForced() override;
@@ -80,6 +79,7 @@
   base::TimeDelta DrawDurationEstimate() override;
   base::TimeDelta BeginMainFrameToCommitDurationEstimate() override;
   base::TimeDelta CommitToActivateDurationEstimate() override;
+  void DidBeginImplFrameDeadline() override;
   void SendBeginFramesToChildren(const BeginFrameArgs& args) override;
   void SendBeginMainFrameNotExpectedSoon() override;
 
@@ -159,9 +159,7 @@
   scoped_ptr<ResourceUpdateQueue> queue_for_commit_;
   bool next_frame_is_newly_committed_frame_;
 
-#if DCHECK_IS_ON()
   bool inside_impl_frame_;
-#endif
   bool inside_draw_;
   bool defer_commits_;
   bool animate_requested_;