viz: Move some code into //components/viz/common.

services/ui/common/server_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_COMMON_SERVER_GPU_MEMORY_BUFFER_MANAGER_H_
-#define SERVICES_UI_COMMON_SERVER_GPU_MEMORY_BUFFER_MANAGER_H_
-
-#include <memory>
-
-#include "base/macros.h"
-#include "base/memory/weak_ptr.h"
-#include "base/threading/thread_checker.h"
-#include "gpu/command_buffer/client/gpu_memory_buffer_manager.h"
-#include "gpu/ipc/host/gpu_memory_buffer_support.h"
-#include "services/ui/gpu/interfaces/gpu_service.mojom.h"
-
-namespace ui {
-
-// This GpuMemoryBufferManager is for establishing a GpuChannelHost used by
-// mus locally.
-class ServerGpuMemoryBufferManager : public gpu::GpuMemoryBufferManager,
-                                     public base::ThreadChecker {
- public:
-  ServerGpuMemoryBufferManager(mojom::GpuService* gpu_service, int client_id);
-  ~ServerGpuMemoryBufferManager() override;
-
-  void DestroyGpuMemoryBuffer(gfx::GpuMemoryBufferId id,
-                              int client_id,
-                              const gpu::SyncToken& sync_token);
-
-  void DestroyAllGpuMemoryBufferForClient(int client_id);
-
-  gfx::GpuMemoryBufferHandle CreateGpuMemoryBufferHandle(
-      gfx::GpuMemoryBufferId id,
-      int client_id,
-      const gfx::Size& size,
-      gfx::BufferFormat format,
-      gfx::BufferUsage usage,
-      gpu::SurfaceHandle surface_handle);
-
-  // Overridden from gpu::GpuMemoryBufferManager:
-  std::unique_ptr<gfx::GpuMemoryBuffer> CreateGpuMemoryBuffer(
-      const gfx::Size& size,
-      gfx::BufferFormat format,
-      gfx::BufferUsage usage,
-      gpu::SurfaceHandle surface_handle) override;
-  void SetDestructionSyncToken(gfx::GpuMemoryBuffer* buffer,
-                               const gpu::SyncToken& sync_token) override;
-
- private:
-  mojom::GpuService* gpu_service_;
-  const int client_id_;
-  int next_gpu_memory_id_ = 1;
-
-  using NativeBuffers =
-      std::unordered_set<gfx::GpuMemoryBufferId,
-                         BASE_HASH_NAMESPACE::hash<gfx::GpuMemoryBufferId>>;
-  std::unordered_map<int, NativeBuffers> native_buffers_;
-
-  const gpu::GpuMemoryBufferConfigurationSet native_configurations_;
-  base::WeakPtrFactory<ServerGpuMemoryBufferManager> weak_factory_;
-
-  DISALLOW_COPY_AND_ASSIGN(ServerGpuMemoryBufferManager);
-};
-
-}  // namespace ui
-
-#endif  // SERVICES_UI_COMMON_SERVER_GPU_MEMORY_BUFFER_MANAGER_H_