Have a common implementation of cc::OutputSurface

content/renderer/gpu/compositor_output_surface.h

Index: content/renderer/gpu/compositor_output_surface.h
diff --git a/content/renderer/gpu/compositor_output_surface.h b/content/renderer/gpu/compositor_output_surface.h
index 57b344ae5ed9b2b773b5e1c6adbef1879ee3ccb5..8fc05020809247f22e6aa9487fa8a1b6f59efb20 100644
--- a/content/renderer/gpu/compositor_output_surface.h
+++ b/content/renderer/gpu/compositor_output_surface.h
@@ -12,7 +12,6 @@
 #include "base/threading/non_thread_safe.h"
 #include "base/time.h"
 #include "cc/output_surface.h"
-#include "cc/software_output_device.h"
 
 namespace base {
 class TaskRunner;
@@ -41,9 +40,6 @@ class CompositorOutputSurface
 
   // cc::OutputSurface implementation.
   virtual bool BindToClient(cc::OutputSurfaceClient* client) OVERRIDE;
-  virtual const struct Capabilities& Capabilities() const OVERRIDE;
-  virtual WebKit::WebGraphicsContext3D* Context3D() const OVERRIDE;
-  virtual cc::SoftwareOutputDevice* SoftwareDevice() const OVERRIDE;
   virtual void SendFrameToParentCompositor(cc::CompositorFrame*) OVERRIDE;
 
  private:
@@ -73,12 +69,8 @@ class CompositorOutputSurface
   bool Send(IPC::Message* message);
 
   scoped_refptr<IPC::ForwardingMessageFilter> output_surface_filter_;
-  cc::OutputSurfaceClient* client_;
   scoped_refptr<CompositorOutputSurfaceProxy> output_surface_proxy_;
   int routing_id_;
-  struct Capabilities capabilities_;
-  scoped_ptr<WebKit::WebGraphicsContext3D> context3D_;
-  scoped_ptr<cc::SoftwareOutputDevice> software_device_;
 };
 
 }  // namespace content