Hook up ui::Compositor to Display's BeginFrameSource

cc/output/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_OUTPUT_OUTPUT_SURFACE_H_
 #define CC_OUTPUT_OUTPUT_SURFACE_H_
 
 #include <deque>
 #include <memory>
 
@@ skipping 181 matching lines @@
   scoped_refptr<ContextProvider> worker_context_provider_;
 #if defined(ENABLE_VULKAN)
   scoped_refptr<VulkanContextProvider> vulkan_context_provider_;
 #endif
   std::unique_ptr<SoftwareOutputDevice> software_device_;
   gfx::Size surface_size_;
   float device_scale_factor_;
   bool has_alpha_;
   base::ThreadChecker client_thread_checker_;
 
-  void CommitVSyncParameters(base::TimeTicks timebase,
-                             base::TimeDelta interval);
-
   void SetNeedsRedrawRect(const gfx::Rect& damage_rect);
   void ReclaimResources(const CompositorFrameAck* ack);
   void SetExternalStencilTest(bool enabled);
   void DetachFromClientInternal();
 
  private:
   bool external_stencil_test_enabled_;
 
   base::WeakPtrFactory<OutputSurface> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(OutputSurface);
 };
 
 }  // namespace cc
 
 #endif  // CC_OUTPUT_OUTPUT_SURFACE_H_