Introduce Display Compositor mojo interface. Use InProcessContextProvider.

services/ui/ws/mus_gpu_memory_buffer_manager.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 SERVICES_UI_WS_MUS_GPU_MEMORY_BUFFER_MANAGER_H_
-#define SERVICES_UI_WS_MUS_GPU_MEMORY_BUFFER_MANAGER_H_
-
-#include <memory>
-
-#include "base/macros.h"
-#include "base/memory/weak_ptr.h"
-#include "gpu/command_buffer/client/gpu_memory_buffer_manager.h"
-
-namespace ui {
-
-namespace mojom {
-class GpuServiceInternal;
-}
-
-namespace ws {
-
-// This GpuMemoryBufferManager is for establishing a GpuChannelHost used by
-// mus locally.
-class MusGpuMemoryBufferManager : public gpu::GpuMemoryBufferManager {
- public:
-  MusGpuMemoryBufferManager(mojom::GpuServiceInternal* gpu_service,
-                            int client_id);
-  ~MusGpuMemoryBufferManager() override;
-
-  // Overridden from gpu::GpuMemoryBufferManager:
-  std::unique_ptr<gfx::GpuMemoryBuffer> AllocateGpuMemoryBuffer(
-      const gfx::Size& size,
-      gfx::BufferFormat format,
-      gfx::BufferUsage usage,
-      gpu::SurfaceHandle surface_handle) override;
-  std::unique_ptr<gfx::GpuMemoryBuffer> CreateGpuMemoryBufferFromHandle(
-      const gfx::GpuMemoryBufferHandle& handle,
-      const gfx::Size& size,
-      gfx::BufferFormat format) override;
-  void SetDestructionSyncToken(gfx::GpuMemoryBuffer* buffer,
-                               const gpu::SyncToken& sync_token) override;
-
- private:
-  DISALLOW_COPY_AND_ASSIGN(MusGpuMemoryBufferManager);
-
-  void DestroyGpuMemoryBuffer(gfx::GpuMemoryBufferId id,
-                              int client_id,
-                              bool is_native,
-                              const gpu::SyncToken& sync_token);
-
-  mojom::GpuServiceInternal* gpu_service_;
-  const int client_id_;
-  base::WeakPtrFactory<MusGpuMemoryBufferManager> weak_factory_;
-};
-
-}  // namespace ws
-}  // namespace ui
-
-#endif  // SERVICES_UI_WS_MUS_GPU_MEMORY_BUFFER_MANAGER_H_