gpu: A common GpuMemoryBufferManager implemenetation for clients.

services/ui/public/cpp/mojo_gpu_memory_buffer_manager.h

 // Copyright 2015 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_PUBLIC_CPP_MOJO_GPU_MEMORY_BUFFER_MANAGER_H_
 #define SERVICES_UI_PUBLIC_CPP_MOJO_GPU_MEMORY_BUFFER_MANAGER_H_
 
 #include <memory>
 #include <vector>
 
 #include "base/macros.h"
 #include "base/memory/ref_counted.h"
-#include "base/memory/weak_ptr.h"
 #include "base/threading/thread.h"
-#include "gpu/command_buffer/client/gpu_memory_buffer_manager.h"
+#include "gpu/ipc/client/client_gpu_memory_buffer_manager.h"
 #include "services/ui/public/interfaces/gpu_service.mojom.h"
 
 namespace base {
 class WaitableEvent;
 }
 
 namespace service_manager {
 class Connector;
 }
 
 namespace ui {
 
 namespace mojom {
 class GpuService;
 }
 
-class MojoGpuMemoryBufferManager : public gpu::GpuMemoryBufferManager {
+class MojoGpuMemoryBufferManager
+    : public gpu::ClientGpuMemoryBufferManager::Delegate {
  public:
   explicit MojoGpuMemoryBufferManager(service_manager::Connector* connector);
   ~MojoGpuMemoryBufferManager() override;
 
+  gpu::GpuMemoryBufferManager* gpu_memory_buffer_manager() {
+    return gpu_memory_buffer_manager_.get();
+  }
+
  private:
   void InitThread();
   void TearDownThread();
   void AllocateGpuMemoryBufferOnThread(const gfx::Size& size,
                                        gfx::BufferFormat format,
                                        gfx::BufferUsage usage,
                                        gfx::GpuMemoryBufferHandle* handle,
                                        base::WaitableEvent* wait);
-  void DeletedGpuMemoryBuffer(gfx::GpuMemoryBufferId id,
-                              const gpu::SyncToken& sync_token);
 
-  // Overridden from gpu::GpuMemoryBufferManager:
-  std::unique_ptr<gfx::GpuMemoryBuffer> AllocateGpuMemoryBuffer(
+  // gpu::ClientGpuMemoryBufferManager::Delegate:
+  gfx::GpuMemoryBufferHandle GetSharedMemoryHandle(
       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;
-  gfx::GpuMemoryBuffer* GpuMemoryBufferFromClientBuffer(
-      ClientBuffer buffer) override;
-  void SetDestructionSyncToken(gfx::GpuMemoryBuffer* buffer,
-                               const gpu::SyncToken& sync_token) override;
+      gfx::BufferUsage usage) override;
+  void DeletedGpuMemoryBuffer(gfx::GpuMemoryBufferId id,
+                              const gpu::SyncToken& token) override;
+
   int counter_ = 0;
   // TODO(sad): Explore the option of doing this from an existing thread.
   base::Thread thread_;
+  scoped_refptr<gpu::ClientGpuMemoryBufferManager> gpu_memory_buffer_manager_;
   mojom::GpuServicePtr gpu_service_;
   std::unique_ptr<service_manager::Connector> connector_;
-  base::WeakPtrFactory<MojoGpuMemoryBufferManager> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(MojoGpuMemoryBufferManager);
 };
 
 }  // namespace ui
 
 #endif  // SERVICES_UI_PUBLIC_CPP_MOJO_GPU_MEMORY_BUFFER_MANAGER_H_