Make cc output surface creation async

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 ff7325c4291032cbd263309fa278ed7d3e1f060d..1e3a7a31657c56c460cfd7f354bd6f7dc029c5fb 100644
--- a/cc/trees/thread_proxy.h
+++ b/cc/trees/thread_proxy.h
@@ -152,6 +152,7 @@ class CC_EXPORT ThreadProxy : public Proxy,
   // Proxy implementation
   virtual void FinishAllRendering() OVERRIDE;
   virtual bool IsStarted() const OVERRIDE;
+  virtual void SetOutputSurface(scoped_ptr<OutputSurface>) OVERRIDE;
   virtual void SetLayerTreeHostClientReady() OVERRIDE;
   virtual void SetVisible(bool visible) OVERRIDE;
   virtual const RendererCapabilities& GetRendererCapabilities() const OVERRIDE;
@@ -245,7 +246,7 @@ class CC_EXPORT ThreadProxy : public Proxy,
   void DidCompleteSwapBuffers();
   void SetAnimationEvents(scoped_ptr<AnimationEventsVector> queue);
   void DidLoseOutputSurface();
-  void CreateAndInitializeOutputSurface();
+  void RequestNewOutputSurface();
   void DidInitializeOutputSurface(bool success,
                                   const RendererCapabilities& capabilities);
   void SendCommitRequestToImplThreadIfNeeded();