cc: Create ProxyBeginFrameSource

cc/trees/single_thread_proxy.h

Index: cc/trees/single_thread_proxy.h
diff --git a/cc/trees/single_thread_proxy.h b/cc/trees/single_thread_proxy.h
index a6c348acc6cd6939a7f5d38704f7c9a32ffac8be..92031021a84de53a8d485fb7cb9e91b390bd0bbe 100644
--- a/cc/trees/single_thread_proxy.h
+++ b/cc/trees/single_thread_proxy.h
@@ -23,6 +23,7 @@ class BeginFrameSource;
 class ContextProvider;
 class LayerTreeHost;
 class LayerTreeHostSingleThreadClient;
+class ProxyBeginFrameSource;
 
 class CC_EXPORT SingleThreadProxy : public Proxy,
                                     NON_EXPORTED_BASE(LayerTreeHostImplClient),
@@ -32,7 +33,8 @@ class CC_EXPORT SingleThreadProxy : public Proxy,
       LayerTreeHost* layer_tree_host,
       LayerTreeHostSingleThreadClient* client,
       scoped_refptr<base::SingleThreadTaskRunner> main_task_runner,
-      scoped_ptr<BeginFrameSource> external_begin_frame_source);
+      scoped_ptr<BeginFrameSource> external_begin_frame_source,
+      ProxyBeginFrameSource* proxy_begin_frame_source);
   ~SingleThreadProxy() override;
 
   // Proxy implementation
@@ -60,7 +62,6 @@ class CC_EXPORT SingleThreadProxy : public Proxy,
   bool SupportsImplScrolling() const override;
   void AsValueInto(base::debug::TracedValue* state) const override;
   bool MainFrameWillHappenForTesting() override;
-  void SetChildrenNeedBeginFrames(bool children_need_begin_frames) override;
 
   // SchedulerClient implementation
   void WillBeginImplFrame(const BeginFrameArgs& args) override;
@@ -77,7 +78,6 @@ class CC_EXPORT SingleThreadProxy : public Proxy,
   base::TimeDelta BeginMainFrameToCommitDurationEstimate() override;
   base::TimeDelta CommitToActivateDurationEstimate() override;
   void DidBeginImplFrameDeadline() override;
-  void SendBeginFramesToChildren(const BeginFrameArgs& args) override;
 
   // LayerTreeHostImplClient implementation
   void UpdateRendererCapabilitiesOnImplThread() override;
@@ -119,7 +119,8 @@ class CC_EXPORT SingleThreadProxy : public Proxy,
       LayerTreeHost* layer_tree_host,
       LayerTreeHostSingleThreadClient* client,
       scoped_refptr<base::SingleThreadTaskRunner> main_task_runner,
-      scoped_ptr<BeginFrameSource> external_begin_frame_source);
+      scoped_ptr<BeginFrameSource> external_begin_frame_source,
+      ProxyBeginFrameSource* proxy_begin_frame_source);
 
   void BeginMainFrame();
   void BeginMainFrameAbortedOnImplThread(CommitEarlyOutReason reason);
@@ -167,6 +168,8 @@ class CC_EXPORT SingleThreadProxy : public Proxy,
 
   scoped_ptr<BeginFrameSource> external_begin_frame_source_;
 
+  ProxyBeginFrameSource* proxy_begin_frame_source_;
+
   base::WeakPtrFactory<SingleThreadProxy> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(SingleThreadProxy);