cc: Make separate interface for BeginFrame ipc from OutputSurface

cc/test/fake_output_surface.h

 // Copyright 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CC_TEST_FAKE_OUTPUT_SURFACE_H_
 #define CC_TEST_FAKE_OUTPUT_SURFACE_H_
 
 #include "base/callback.h"
 #include "base/logging.h"
 #include "base/time/time.h"
@@ skipping 76 matching lines @@
         TestContextProvider::Create(context.Pass()), false));
     surface->capabilities_.uses_default_gl_framebuffer = false;
     return surface.Pass();
   }
 
   CompositorFrame& last_sent_frame() { return last_sent_frame_; }
   size_t num_sent_frames() { return num_sent_frames_; }
 
   virtual void SwapBuffers(CompositorFrame* frame) override;
 
-  virtual void SetNeedsBeginFrame(bool enable) override;
-  bool needs_begin_frame() const { return needs_begin_frame_; }
-
   virtual bool BindToClient(OutputSurfaceClient* client) override;
 
   using OutputSurface::ReleaseGL;
   using OutputSurface::InitializeAndSetContext3d;
 
   void SetTreeActivationCallback(const base::Closure& callback);
 
   const TransferableResourceArray& resources_held_by_parent() {
     return resources_held_by_parent_;
   }
@@ skipping 21 matching lines @@
   FakeOutputSurface(
       scoped_refptr<ContextProvider> context_provider,
       scoped_ptr<SoftwareOutputDevice> software_device,
       bool delegated_rendering);
 
   void OnBeginFrame();
 
   OutputSurfaceClient* client_;
   CompositorFrame last_sent_frame_;
   size_t num_sent_frames_;
-  bool needs_begin_frame_;
   bool has_external_stencil_test_;
   TransferableResourceArray resources_held_by_parent_;
   scoped_ptr<ManagedMemoryPolicy> memory_policy_to_set_at_bind_;
 
   base::WeakPtrFactory<FakeOutputSurface> fake_weak_ptr_factory_;
 };
 
 }  // namespace cc
 
 #endif  // CC_TEST_FAKE_OUTPUT_SURFACE_H_