cc: Heuristic for Renderer latency recovery

cc/scheduler/scheduler.h

Index: cc/scheduler/scheduler.h
diff --git a/cc/scheduler/scheduler.h b/cc/scheduler/scheduler.h
index 967d31b7f5912a192ae32daf6d38f1d1a436db22..9ca71ae6d48c1112168320ec78b55a57d6c259e4 100644
--- a/cc/scheduler/scheduler.h
+++ b/cc/scheduler/scheduler.h
@@ -120,9 +120,6 @@ class CC_EXPORT Scheduler : public BeginFrameObserverBase {
   bool PrepareTilesPending() const {
     return state_machine_.PrepareTilesPending();
   }
-  bool MainThreadIsInHighLatencyMode() const {
-    return state_machine_.MainThreadIsInHighLatencyMode();
-  }
   bool BeginImplFrameDeadlinePending() const {
     return !begin_impl_frame_deadline_task_.IsCancelled();
   }
@@ -201,13 +198,15 @@ class CC_EXPORT Scheduler : public BeginFrameObserverBase {
   void DrawAndSwapForced();
   void ProcessScheduledActions();
   void UpdateCompositorTimingHistoryRecordingEnabled();
+  bool ShouldRecoverMainLatency() const;
+  bool ShouldRecoverImplLatency() const;
   bool CanCommitAndActivateBeforeDeadline() const;
   void AdvanceCommitStateIfPossible();
   bool IsBeginMainFrameSentOrStarted() const;
   void BeginRetroFrame();
   void BeginImplFrameWithDeadline(const BeginFrameArgs& args);
   void BeginImplFrameSynchronous(const BeginFrameArgs& args);
-  void BeginImplFrame(const BeginFrameArgs& args);
+  void BeginImplFrame();
   void FinishImplFrame();
   void OnBeginImplFrameDeadline();
   void PollToAdvanceCommitState();