Revert of DirectCompositorFrameSink Uses CompositorFrameSinkSupport

components/display_compositor/gpu_display_compositor_frame_sink.h

 // Copyright 2017 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 COMPONENTS_DISPLAY_COMPOSITOR_GPU_DISPLAY_COMPOSITOR_FRAME_SINK_H_
 #define COMPONENTS_DISPLAY_COMPOSITOR_GPU_DISPLAY_COMPOSITOR_FRAME_SINK_H_
 
 #include "components/display_compositor/gpu_compositor_frame_sink.h"
 #include "components/display_compositor/gpu_compositor_frame_sink_delegate.h"
 #include "mojo/public/cpp/bindings/associated_binding.h"
@@ skipping 20 matching lines @@
   // cc::mojom::DisplayPrivate:
   void SetDisplayVisible(bool visible) override;
   void ResizeDisplay(const gfx::Size& size) override;
   void SetDisplayColorSpace(const gfx::ColorSpace& color_space) override;
   void SetOutputIsSecure(bool secure) override;
 
  private:
   mojo::AssociatedBinding<cc::mojom::MojoCompositorFrameSink> binding_;
   mojo::AssociatedBinding<cc::mojom::DisplayPrivate> display_private_binding_;
 
-  // GpuCompositorFrameSink holds a Display and its BeginFrameSource. In the
-  // window server, the display root window's CompositorFrameSink will have a
-  // valid gpu::SurfaceHandle.
-  std::unique_ptr<cc::BeginFrameSource> display_begin_frame_source_;
-  std::unique_ptr<cc::Display> display_;
-
   DISALLOW_COPY_AND_ASSIGN(GpuDisplayCompositorFrameSink);
 };
 
 }  // namespace display_compositor
 
 #endif  // COMPONENTS_DISPLAY_COMPOSITOR_GPU_DISPLAY_COMPOSITOR_FRAME_SINK_H_