Unified BeginFrame scheduling

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 24446502a8dacfcfe50092f58143777d47f2cf52..e734ff3a189c96e6234716cb8fc4366536ebb939 100644
--- a/cc/trees/single_thread_proxy.h
+++ b/cc/trees/single_thread_proxy.h
@@ -53,6 +53,8 @@ class CC_EXPORT SingleThreadProxy : public Proxy,
   virtual void ForceSerializeOnSwapBuffers() OVERRIDE;
   virtual bool SupportsImplScrolling() const OVERRIDE;
   virtual void AsValueInto(base::debug::TracedValue* state) const OVERRIDE;
+  virtual void SetAuthoritativeVSyncInterval(base::TimeDelta interval) OVERRIDE;
+  virtual void SetChildrenNeedBeginFrames(bool need_begin_frame) OVERRIDE;
   virtual bool CommitPendingForTesting() OVERRIDE;
 
   // SchedulerClient implementation
@@ -72,6 +74,7 @@ class CC_EXPORT SingleThreadProxy : public Proxy,
   virtual base::TimeDelta BeginMainFrameToCommitDurationEstimate() OVERRIDE;
   virtual base::TimeDelta CommitToActivateDurationEstimate() OVERRIDE;
   virtual void DidBeginImplFrameDeadline() OVERRIDE;
+  virtual void SendBeginFrameToChildren(const BeginFrameArgs& args) OVERRIDE;
 
   // LayerTreeHostImplClient implementation
   virtual void UpdateRendererCapabilitiesOnImplThread() OVERRIDE;