cc: Add testing stubs for proxy test

cc/trees/layer_tree_host.h

 // Copyright 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CC_TREES_LAYER_TREE_HOST_H_
 #define CC_TREES_LAYER_TREE_HOST_H_
 
 #include <limits>
 #include <list>
 #include <set>
@@ skipping 291 matching lines @@
   // Call this function when you expect there to be a swap buffer.
   // See swap_promise.h for how to use SwapPromise.
   void QueueSwapPromise(scoped_ptr<SwapPromise> swap_promise);
 
   void BreakSwapPromises(SwapPromise::DidNotSwapReason reason);
 
  protected:
   LayerTreeHost(LayerTreeHostClient* client,
                 SharedBitmapManager* manager,
                 const LayerTreeSettings& settings);
-  void InitializeThreaded(
+  // virtual for test.

[danakj, 2014/04/24 16:03:15]

drop the comment.

[simonhong, 2014/04/25 00:42:35]

Done.

+  virtual void InitializeThreaded(
       scoped_refptr<base::SingleThreadTaskRunner> impl_task_runner);
   void InitializeSingleThreaded(
       LayerTreeHostSingleThreadClient* single_thread_client);
   void InitializeForTesting(scoped_ptr<Proxy> proxy_for_testing);
   void SetOutputSurfaceLostForTesting(bool is_lost) {
     output_surface_lost_ = is_lost;
   }
+  void InitializeProxy(scoped_ptr<Proxy> proxy);
 
   MicroBenchmarkController micro_benchmark_controller_;
 
  private:
-  void InitializeProxy(scoped_ptr<Proxy> proxy);
-
   void PaintLayerContents(
       const RenderSurfaceLayerList& render_surface_layer_list,
       ResourceUpdateQueue* queue,
       bool* did_paint_content,
       bool* need_more_updates);
   void PaintMasksForRenderSurface(Layer* render_surface_layer,
                                   ResourceUpdateQueue* queue,
                                   bool* did_paint_content,
                                   bool* need_more_updates);
   bool UpdateLayers(Layer* root_layer, ResourceUpdateQueue* queue);
@@ skipping 117 matching lines @@
 
   ScopedPtrVector<SwapPromise> swap_promise_list_;
   std::set<SwapPromiseMonitor*> swap_promise_monitor_;
 
   DISALLOW_COPY_AND_ASSIGN(LayerTreeHost);
 };
 
 }  // namespace cc
 
 #endif  // CC_TREES_LAYER_TREE_HOST_H_