cc: Add ScopedReadLockGpuMemoryBuffer

cc/test/test_gpu_memory_buffer_manager.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 CC_TEST_TEST_GPU_MEMORY_BUFFER_MANAGER_H_
 #define CC_TEST_TEST_GPU_MEMORY_BUFFER_MANAGER_H_
 
 #include <memory>
 
 #include "base/macros.h"
 #include "gpu/command_buffer/client/gpu_memory_buffer_manager.h"
 
 namespace cc {
 
 class TestGpuMemoryBufferManager : public gpu::GpuMemoryBufferManager {
  public:
   TestGpuMemoryBufferManager();
   ~TestGpuMemoryBufferManager() override;
 
+  std::unique_ptr<TestGpuMemoryBufferManager>
+  CreateClientGpuMemoryBufferManager();
+  int GetClientId() { return client_id_; }
+
   void SetGpuMemoryBufferIsInUseByMacOSWindowServer(
       gfx::GpuMemoryBuffer* gpu_memory_buffer,
       bool in_use);
 
+  void OnGpuMemoryBufferDestroyed(gfx::GpuMemoryBufferId gpu_memory_buffer_id);
+
   // 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;
   std::unique_ptr<gfx::GpuMemoryBuffer> CreateGpuMemoryBufferFromClientId(
       int client_id,
       const gfx::GpuMemoryBufferId& gpu_memory_buffer_id) override;
   gfx::GpuMemoryBuffer* GpuMemoryBufferFromClientBuffer(
       ClientBuffer buffer) override;
   void SetDestructionSyncToken(gfx::GpuMemoryBuffer* buffer,
                                const gpu::SyncToken& sync_token) override;
 
  private:
+  // Buffers allocated by this manager.
+  int last_gpu_memory_buffer_id_ = 1000;
+  std::map<int, gfx::GpuMemoryBuffer*> buffers_;
+
+  // Parent information for child managers.
+  int client_id_ = -1;
+  TestGpuMemoryBufferManager* parent_gpu_memory_buffer_manager_ = nullptr;
+
+  // Child infomration for parent managers.
+  int last_client_id_ = 5000;
+  std::map<int, TestGpuMemoryBufferManager*> clients_;
+
   DISALLOW_COPY_AND_ASSIGN(TestGpuMemoryBufferManager);
 };
 
 }  // namespace cc
 
 #endif  // CC_TEST_TEST_GPU_MEMORY_BUFFER_MANAGER_H_