cc: Make separate interface for BeginFrame ipc from OutputSurface

content/browser/android/in_process/synchronous_compositor_impl.h

Index: content/browser/android/in_process/synchronous_compositor_impl.h
diff --git a/content/browser/android/in_process/synchronous_compositor_impl.h b/content/browser/android/in_process/synchronous_compositor_impl.h
index 03d27969c37130ff93d18987d6f69d8f9d0eb33b..6ec46f0f3820abe03bf4097ee880b91307cd22f8 100644
--- a/content/browser/android/in_process/synchronous_compositor_impl.h
+++ b/content/browser/android/in_process/synchronous_compositor_impl.h
@@ -18,6 +18,7 @@
 #include "ipc/ipc_message.h"
 
 namespace cc {
+class BeginFrameSource;
 class InputHandler;
 }
 
@@ -27,6 +28,7 @@ class WebInputEvent;
 
 namespace content {
 class InputHandlerManager;
+class SynchronousCompositorExternalBeginFrameSource;
 struct DidOverscrollParams;
 
 // The purpose of this class is to act as the intermediary between the various
@@ -48,6 +50,14 @@ class SynchronousCompositorImpl
 
   InputEventAckState HandleInputEvent(const blink::WebInputEvent& input_event);
 
+  scoped_ptr<cc::BeginFrameSource> GetExternalBeginFrameSource();
+
+  bool IsInvokingComposite() const;
+
+  SynchronousCompositorOutputSurface* output_surface() const {
+    return output_surface_;
+  }
+
   // SynchronousCompositor
   virtual void SetClient(SynchronousCompositorClient* compositor_client)
       override;
@@ -72,8 +82,9 @@ class SynchronousCompositorImpl
       SynchronousCompositorOutputSurface* output_surface) override;
   virtual void DidDestroySynchronousOutputSurface(
       SynchronousCompositorOutputSurface* output_surface) override;
-  virtual void SetContinuousInvalidate(bool enable) override;
+  virtual void UpdateContinuousInvalidate() override;
   virtual void DidActivatePendingTree() override;
+  virtual void BeginFrame() override;
 
   // LayerScrollOffsetDelegate
   virtual gfx::ScrollOffset GetTotalScrollOffset() override;
@@ -101,6 +112,7 @@ class SynchronousCompositorImpl
 
   SynchronousCompositorClient* compositor_client_;
   SynchronousCompositorOutputSurface* output_surface_;
+  SynchronousCompositorExternalBeginFrameSource* begin_frame_source_;
   WebContents* contents_;
   cc::InputHandler* input_handler_;