Revert of Make cc::Display not own its BeginFrameSource

blimp/client/app/compositor/browser_compositor.h

 // Copyright 2016 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 BLIMP_CLIENT_APP_COMPOSITOR_BROWSER_COMPOSITOR_H_
 #define BLIMP_CLIENT_APP_COMPOSITOR_BROWSER_COMPOSITOR_H_
 
 #include "base/macros.h"
 #include "base/callback.h"
 #include "base/memory/weak_ptr.h"
-#include "cc/scheduler/begin_frame_source.h"
 #include "cc/trees/layer_tree_host_client.h"
 #include "cc/trees/layer_tree_host_single_thread_client.h"
 #include "ui/gfx/geometry/size.h"
 #include "ui/gfx/native_widget_types.h"
 
 namespace cc {
 class Display;
 class Layer;
 class LayerTreeHost;
 class SurfaceIdAllocator;
@@ skipping 55 matching lines @@
   void DidAbortSwapBuffers() override {}
 
   void HandlePendingOutputSurfaceRequest();
 
   CompositorDependencies* compositor_dependencies_;
 
   std::unique_ptr<cc::SurfaceIdAllocator> surface_id_allocator_;
   gfx::AcceleratedWidget widget_;
   bool output_surface_request_pending_;
   std::unique_ptr<cc::Display> display_;
-  std::unique_ptr<cc::SyntheticBeginFrameSource> begin_frame_source_;
 
   gfx::Size viewport_size_in_px_;
 
   std::unique_ptr<cc::LayerTreeHost> host_;
   scoped_refptr<cc::Layer> root_layer_;
 
   base::Closure did_complete_swap_buffers_;
 
   DISALLOW_COPY_AND_ASSIGN(BrowserCompositor);
 };
 
 }  // namespace client
 }  // namespace blimp
 
 #endif  // BLIMP_CLIENT_APP_COMPOSITOR_BROWSER_COMPOSITOR_H_