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..ba355e30b24eb5ad0d095c5ecc4a66b1990d9640 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 +50,17 @@ class SynchronousCompositorImpl
 
   InputEventAckState HandleInputEvent(const blink::WebInputEvent& input_event);
 
+  void SetExternalBeginFrameSource(
+      SynchronousCompositorExternalBeginFrameSource* begin_frame_source);
+
+  void SetContinuousInvalidate(bool needs_begin_frames) const;
+
+  bool invoking_composite() const { return invoking_composite_; }
+
+  SynchronousCompositorOutputSurface* output_surface() const {
+    return output_surface_;
+  }
+
   // SynchronousCompositor
   virtual void SetClient(SynchronousCompositorClient* compositor_client)
       override;
@@ -72,7 +85,6 @@ class SynchronousCompositorImpl
       SynchronousCompositorOutputSurface* output_surface) override;
   virtual void DidDestroySynchronousOutputSurface(
       SynchronousCompositorOutputSurface* output_surface) override;
-  virtual void SetContinuousInvalidate(bool enable) override;
   virtual void DidActivatePendingTree() override;
 
   // LayerScrollOffsetDelegate
@@ -97,12 +109,15 @@ class SynchronousCompositorImpl
 
   void UpdateFrameMetaData(const cc::CompositorFrameMetadata& frame_info);
   void DeliverMessages();
+  void BeginFrame() const;
   bool CalledOnValidThread() const;
 
   SynchronousCompositorClient* compositor_client_;
   SynchronousCompositorOutputSurface* output_surface_;
+  SynchronousCompositorExternalBeginFrameSource* begin_frame_source_;
   WebContents* contents_;
   cc::InputHandler* input_handler_;
+  bool invoking_composite_;
 
   base::WeakPtrFactory<SynchronousCompositorImpl> weak_ptr_factory_;