cc: Use multiple PrepareTiles approaches

cc/trees/thread_proxy.h

Index: cc/trees/thread_proxy.h
diff --git a/cc/trees/thread_proxy.h b/cc/trees/thread_proxy.h
index f4f1f283c77553e28348a790ffafa687b815da63..276b34e0f98494ae895a9ed2a47864edb4debeb8 100644
--- a/cc/trees/thread_proxy.h
+++ b/cc/trees/thread_proxy.h
@@ -196,13 +196,14 @@ class CC_EXPORT ThreadProxy : public Proxy,
   void OnCanDrawStateChanged(bool can_draw) override;
   void NotifyReadyToActivate() override;
   void NotifyReadyToDraw() override;
+  void SetRequiresHighResToDraw(bool required) override;
   // Please call these 3 functions through
   // LayerTreeHostImpl's SetNeedsRedraw(), SetNeedsRedrawRect() and
   // SetNeedsAnimate().
   void SetNeedsRedrawOnImplThread() override;
   void SetNeedsRedrawRectOnImplThread(const gfx::Rect& dirty_rect) override;
   void SetNeedsAnimateOnImplThread() override;
-  void SetNeedsPrepareTilesOnImplThread() override;
+  void SetNeedsPrepareTilesOnImplThread(bool for_commit) override;
   void SetNeedsCommitOnImplThread() override;
   void SetVideoNeedsBeginFrames(bool needs_begin_frames) override;
   void PostAnimationEventsToMainThreadOnImplThread(
@@ -214,7 +215,6 @@ class CC_EXPORT ThreadProxy : public Proxy,
   void PostDelayedAnimationTaskOnImplThread(const base::Closure& task,
                                             base::TimeDelta delay) override;
   void DidActivateSyncTree() override;
-  void DidPrepareTiles() override;
   void DidCompletePageScaleAnimationOnImplThread() override;
   void OnDrawForOutputSurface() override;