gpu: Refactor memory buffer handling code out of content.

content/browser/gpu/browser_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 CONTENT_BROWSER_GPU_BROWSER_GPU_MEMORY_BUFFER_MANAGER_H_
 #define CONTENT_BROWSER_GPU_BROWSER_GPU_MEMORY_BUFFER_MANAGER_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <memory>
 #include <utility>
 
 #include "base/callback.h"
 #include "base/containers/hash_tables.h"
 #include "base/hash.h"
 #include "base/macros.h"
 #include "base/trace_event/memory_dump_provider.h"
 #include "content/common/content_export.h"
 #include "gpu/command_buffer/client/gpu_memory_buffer_manager.h"
+#include "gpu/ipc/client/gpu_host_memory_buffer_manager.h"
 #include "gpu/ipc/common/surface_handle.h"
 
 namespace content {
 
 using GpuMemoryBufferConfigurationKey =
     std::pair<gfx::BufferFormat, gfx::BufferUsage>;
 using GpuMemoryBufferConfigurationSet =
     base::hash_set<GpuMemoryBufferConfigurationKey>;
 
 }  // content
@@ skipping 131 matching lines @@
   void DestroyGpuMemoryBufferOnIO(gfx::GpuMemoryBufferId id,
                                   int client_id,
                                   const gpu::SyncToken& sync_token);
 
   uint64_t ClientIdToTracingProcessId(int client_id) const;
 
   const GpuMemoryBufferConfigurationSet native_configurations_;
   const int gpu_client_id_;
   const uint64_t gpu_client_tracing_id_;
 
+  std::unique_ptr<gpu::GpuHostMemoryBufferManager> gpu_memory_buffer_manager_;
+
   // The GPU process host ID. This should only be accessed on the IO thread.
   int gpu_host_id_;
 
+#if 1
   // Stores info about buffers for all clients. This should only be accessed
   // on the IO thread.
   using BufferMap = base::hash_map<gfx::GpuMemoryBufferId, BufferInfo>;
   using ClientMap = base::hash_map<int, BufferMap>;
   ClientMap clients_;
+#endif
 
   DISALLOW_COPY_AND_ASSIGN(BrowserGpuMemoryBufferManager);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_GPU_BROWSER_GPU_MEMORY_BUFFER_MANAGER_H_