Decouple GpuCompositorFrameSink from DisplayCompositor

services/ui/surfaces/gpu_compositor_frame_sink.h

-// Copyright 2015 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_SURFACES_GPU_COMPOSITOR_FRAME_SINK_H_
-#define SERVICES_UI_SURFACES_GPU_COMPOSITOR_FRAME_SINK_H_
-
-#include <memory>
-#include <vector>
-
-#include "base/macros.h"
-#include "base/memory/weak_ptr.h"
-#include "cc/ipc/display_compositor.mojom.h"
-#include "cc/ipc/mojo_compositor_frame_sink.mojom.h"
-#include "cc/surfaces/compositor_frame_sink_support.h"
-#include "cc/surfaces/compositor_frame_sink_support_client.h"
-#include "cc/surfaces/referenced_surface_tracker.h"
-#include "mojo/public/cpp/bindings/binding.h"
-
-namespace cc {
-class Display;
-}
-
-namespace ui {
-
-class DisplayCompositor;
-
-// Server side representation of a WindowSurface.
-class GpuCompositorFrameSink
-    : public cc::CompositorFrameSinkSupportClient,
-      public cc::mojom::MojoCompositorFrameSink,
-      public cc::mojom::MojoCompositorFrameSinkPrivate {
- public:
-  GpuCompositorFrameSink(
-      DisplayCompositor* display_compositor,
-      const cc::FrameSinkId& frame_sink_id,
-      std::unique_ptr<cc::Display> display,
-      std::unique_ptr<cc::BeginFrameSource> begin_frame_source,
-      cc::mojom::MojoCompositorFrameSinkPrivateRequest private_request,
-      cc::mojom::MojoCompositorFrameSinkClientPtr client);
-
-  ~GpuCompositorFrameSink() override;
-
-  // cc::mojom::MojoCompositorFrameSink:
-  void EvictFrame() override;
-  void SetNeedsBeginFrame(bool needs_begin_frame) override;
-  void SubmitCompositorFrame(const cc::LocalFrameId& local_frame_id,
-                             cc::CompositorFrame frame) override;
-  void Require(const cc::LocalFrameId& local_frame_id,
-               const cc::SurfaceSequence& sequence) override;
-  void Satisfy(const cc::SurfaceSequence& sequence) override;
-
-  // cc::mojom::MojoCompositorFrameSinkPrivate:
-  void AddChildFrameSink(const cc::FrameSinkId& child_frame_sink_id) override;
-  void RemoveChildFrameSink(
-      const cc::FrameSinkId& child_frame_sink_id) override;
-
- protected:
-  void OnClientConnectionLost();
-  void OnPrivateConnectionLost();
-
-  DisplayCompositor* const display_compositor_;
-  cc::CompositorFrameSinkSupport support_;
-
- private:
-  // cc::CompositorFrameSinkSupportClient implementation:
-  void DidReceiveCompositorFrameAck() override;
-  void OnBeginFrame(const cc::BeginFrameArgs& args) override;
-  void ReclaimResources(const cc::ReturnedResourceArray& resources) override;
-  void WillDrawSurface() override;
-
-  // Track the surface references for the surface corresponding to this
-  // compositor frame sink.
-  cc::ReferencedSurfaceTracker surface_tracker_;
-
-  bool client_connection_lost_ = false;
-  bool private_connection_lost_ = false;
-
-  cc::mojom::MojoCompositorFrameSinkClientPtr client_;
-  mojo::Binding<cc::mojom::MojoCompositorFrameSinkPrivate>
-      compositor_frame_sink_private_binding_;
-
-  DISALLOW_COPY_AND_ASSIGN(GpuCompositorFrameSink);
-};
-
-}  // namespace ui
-
-#endif  // SERVICES_UI_SURFACES_GPU_COMPOSITOR_FRAME_SINK_H_