Fork cc::OutputSurface into cc::CompositorFrameSink.

services/ui/public/cpp/output_surface.h

-// Copyright 2014 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 SERVICES_UI_PUBLIC_CPP_OUTPUT_SURFACE_H_
-#define SERVICES_UI_PUBLIC_CPP_OUTPUT_SURFACE_H_
-
-#include "base/macros.h"
-#include "cc/output/output_surface.h"
-#include "cc/scheduler/begin_frame_source.h"
-#include "cc/surfaces/surface_id.h"
-#include "mojo/public/cpp/bindings/binding.h"
-#include "services/ui/public/cpp/window_surface.h"
-#include "services/ui/public/cpp/window_surface_client.h"
-
-namespace gpu {
-class GpuChannelHost;
-}
-
-namespace ui {
-
-class OutputSurface : public cc::OutputSurface, public WindowSurfaceClient {
- public:
-  OutputSurface(scoped_refptr<gpu::GpuChannelHost> gpu_channel_host,
-                std::unique_ptr<WindowSurface> surface);
-  ~OutputSurface() override;
-
-  // cc::OutputSurface implementation.
-  void SwapBuffers(cc::CompositorFrame frame) override;
-  bool BindToClient(cc::OutputSurfaceClient* client) override;
-  void DetachFromClient() override;
-  void BindFramebuffer() override;
-  uint32_t GetFramebufferCopyTextureFormat() override;
-
- private:
-  // WindowSurfaceClient implementation:
-  void OnResourcesReturned(
-      WindowSurface* surface,
-      mojo::Array<cc::ReturnedResource> resources) override;
-
-  void SwapBuffersComplete();
-
-  std::unique_ptr<cc::BeginFrameSource> begin_frame_source_;
-  std::unique_ptr<WindowSurface> surface_;
-
-  DISALLOW_COPY_AND_ASSIGN(OutputSurface);
-};
-
-}  // namespace ui
-
-#endif  // SERVICES_UI_PUBLIC_CPP_OUTPUT_SURFACE_H_