cc: Make separate interface for BeginFrame ipc from OutputSurface

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 817b36ddae47528caa4a85105e17bcea215a4d9f..a8eda8be7f88f3b5047e1715e8289cf9883b8e41 100644
--- a/cc/trees/thread_proxy.h
+++ b/cc/trees/thread_proxy.h
@@ -25,6 +25,7 @@ class SingleThreadTaskRunner;
 
 namespace cc {
 
+class BeginFrameSource;
 class ContextProvider;
 class InputHandlerClient;
 class LayerTreeHost;
@@ -40,7 +41,8 @@ class CC_EXPORT ThreadProxy : public Proxy,
   static scoped_ptr<Proxy> Create(
       LayerTreeHost* layer_tree_host,
       scoped_refptr<base::SingleThreadTaskRunner> main_task_runner,
-      scoped_refptr<base::SingleThreadTaskRunner> impl_task_runner);
+      scoped_refptr<base::SingleThreadTaskRunner> impl_task_runner,
+      scoped_ptr<BeginFrameSource> external_begin_frame_source);
 
   virtual ~ThreadProxy();
 
@@ -210,7 +212,6 @@ class CC_EXPORT ThreadProxy : public Proxy,
   virtual void DidManageTiles() override;
 
   // SchedulerClient implementation
-  virtual BeginFrameSource* ExternalBeginFrameSource() override;
   virtual void WillBeginImplFrame(const BeginFrameArgs& args) override;
   virtual void ScheduledActionSendBeginMainFrame() override;
   virtual DrawResult ScheduledActionDrawAndSwapIfPossible() override;
@@ -231,9 +232,11 @@ class CC_EXPORT ThreadProxy : public Proxy,
   virtual void ReadyToFinalizeTextureUpdates() override;
 
  protected:
-  ThreadProxy(LayerTreeHost* layer_tree_host,
-              scoped_refptr<base::SingleThreadTaskRunner> main_task_runner,
-              scoped_refptr<base::SingleThreadTaskRunner> impl_task_runner);
+  ThreadProxy(
+      LayerTreeHost* layer_tree_host,
+      scoped_refptr<base::SingleThreadTaskRunner> main_task_runner,
+      scoped_refptr<base::SingleThreadTaskRunner> impl_task_runner,
+      scoped_ptr<BeginFrameSource> external_begin_frame_source);
 
  private:
   // Called on main thread.
@@ -298,6 +301,8 @@ class CC_EXPORT ThreadProxy : public Proxy,
   base::WeakPtr<ThreadProxy> main_thread_weak_ptr_;
   base::WeakPtr<ThreadProxy> impl_thread_weak_ptr_;
 
+  scoped_ptr<BeginFrameSource> external_begin_frame_source_;

[brianderson, 2014/10/18 00:08:45]

Should this go into the CompositorThreadOnly group?

[simonhong, 2014/10/23 01:03:08]

Done.

+
   DISALLOW_COPY_AND_ASSIGN(ThreadProxy);
 };