Fork cc::OutputSurface into cc::CompositorFrameSink.

blimp/client/core/compositor/delegated_output_surface.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_CORE_COMPOSITOR_DELEGATED_OUTPUT_SURFACE_H_
-#define BLIMP_CLIENT_CORE_COMPOSITOR_DELEGATED_OUTPUT_SURFACE_H_
-
-#include <memory>
-
-#include "base/macros.h"
-#include "base/memory/weak_ptr.h"
-#include "blimp/client/core/compositor/blimp_output_surface.h"
-#include "cc/output/output_surface.h"
-
-namespace base {
-class SingleThreadTaskRunner;
-}  // namespace base
-
-namespace cc {
-class BeginFrameSource;
-class ContextProvider;
-}  // namespace cc
-
-namespace blimp {
-namespace client {
-
-// This class is created on the main thread, but then becomes bound to the
-// compositor thread and will be destroyed there (soon, crbug.com/640730).
-class DelegatedOutputSurface : public cc::OutputSurface,
-                               public BlimpOutputSurface {
- public:
-  DelegatedOutputSurface(
-      scoped_refptr<cc::ContextProvider> compositor_context_provider,
-      scoped_refptr<cc::ContextProvider> worker_context_provider,
-      scoped_refptr<base::SingleThreadTaskRunner> main_task_runner,
-      base::WeakPtr<BlimpOutputSurfaceClient> client);
-
-  ~DelegatedOutputSurface() override;
-
-  // cc::OutputSurface implementation.
-  uint32_t GetFramebufferCopyTextureFormat() override;
-  bool BindToClient(cc::OutputSurfaceClient* client) override;
-  void SwapBuffers(cc::CompositorFrame frame) override;
-  void DetachFromClient() override;
-
-  // BlimpOutputSurface implementation.
-  void ReclaimCompositorResources(
-      const cc::ReturnedResourceArray& resources) override;
-
- private:
-  scoped_refptr<base::SingleThreadTaskRunner> main_task_runner_;
-  base::WeakPtr<BlimpOutputSurfaceClient> blimp_client_;
-
-  bool bound_to_client_;
-
-  // This OutputSurface is responsible for providing the BeginFrameSource to
-  // drive frame creation.  This will be built on the compositor impl thread at
-  // BindToClient call time.
-  std::unique_ptr<cc::BeginFrameSource> begin_frame_source_;
-
-  base::WeakPtrFactory<DelegatedOutputSurface> weak_factory_;
-
-  DISALLOW_COPY_AND_ASSIGN(DelegatedOutputSurface);
-};
-
-}  // namespace client
-}  // namespace blimp
-
-#endif  // BLIMP_CLIENT_CORE_COMPOSITOR_DELEGATED_OUTPUT_SURFACE_H_