SetNeedsRedraw directly when updating a visible tile.

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 2f3e7c56a671bb48257713001e072a385b398412..04c5b47e3a81d5158fd2f2d1bc0f7dbf535f3a46 100644
--- a/cc/trees/thread_proxy.h
+++ b/cc/trees/thread_proxy.h
@@ -189,7 +189,6 @@ class CC_EXPORT ThreadProxy : public Proxy,
   void SetNeedsRedrawRectOnImplThread(const gfx::Rect& dirty_rect) override;
   void SetNeedsAnimateOnImplThread() override;
   void SetNeedsManageTilesOnImplThread() override;
-  void DidInitializeVisibleTileOnImplThread() override;
   void SetNeedsCommitOnImplThread() override;
   void PostAnimationEventsToMainThreadOnImplThread(
       scoped_ptr<AnimationEventsVector> queue) override;
@@ -210,7 +209,6 @@ class CC_EXPORT ThreadProxy : public Proxy,
   DrawResult ScheduledActionDrawAndSwapForced() override;
   void ScheduledActionAnimate() override;
   void ScheduledActionCommit() override;
-  void ScheduledActionUpdateVisibleTiles() override;
   void ScheduledActionActivateSyncTree() override;
   void ScheduledActionBeginOutputSurfaceCreation() override;
   void ScheduledActionManageTiles() override;