mus: Use ui::ContextProviderCommandBuffer.

services/ui/public/cpp/gpu/gpu.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_PUBLIC_CPP_GPU_GPU_H_
 #define SERVICES_UI_PUBLIC_CPP_GPU_GPU_H_
 
 #include <stdint.h>
 #include <vector>
 
 #include "base/macros.h"
 #include "base/memory/ref_counted.h"
 #include "base/single_thread_task_runner.h"
 #include "base/synchronization/waitable_event.h"
 #include "base/threading/thread.h"
+#include "cc/output/context_provider.h"
 #include "gpu/ipc/client/gpu_channel_host.h"
 #include "services/ui/public/cpp/gpu/client_gpu_memory_buffer_manager.h"
 #include "services/ui/public/interfaces/gpu.mojom.h"
 
 namespace service_manager {
 class Connector;
 class InterfaceProvider;
 }
 
 namespace ui {
@@ skipping 10 matching lines @@
   // The Gpu has to be initialized in the main thread before establishing
   // the gpu channel. If no |task_runner| is provided, then a new thread is
   // created and used.
   static std::unique_ptr<Gpu> Create(
       service_manager::Connector* connector,
       scoped_refptr<base::SingleThreadTaskRunner> task_runner = nullptr);
   static std::unique_ptr<Gpu> Create(
       service_manager::InterfaceProvider*,
       scoped_refptr<base::SingleThreadTaskRunner> task_runner = nullptr);
 
+  scoped_refptr<cc::ContextProvider> CreateContextProvider(
+      scoped_refptr<gpu::GpuChannelHost> gpu_channel);
+
   // gpu::GpuChannelEstablishFactory:
   void EstablishGpuChannel(
       const gpu::GpuChannelEstablishedCallback& callback) override;
   scoped_refptr<gpu::GpuChannelHost> EstablishGpuChannelSync() override;
   gpu::GpuMemoryBufferManager* GetGpuMemoryBufferManager() override;
 
  private:
   friend struct base::DefaultSingletonTraits<Gpu>;
 
   Gpu(service_manager::Connector* connector,
       service_manager::InterfaceProvider* provider,
       scoped_refptr<base::SingleThreadTaskRunner> task_runner);
 
   scoped_refptr<gpu::GpuChannelHost> GetGpuChannel();
-  void EstablishGpuChannelOnMainThreadSyncLocked();
   void OnEstablishedGpuChannel(int client_id,
                                mojo::ScopedMessagePipeHandle channel_handle,
                                const gpu::GPUInfo& gpu_info);
 
   // gpu::GpuChannelHostFactory overrides:
   bool IsMainThread() override;
   scoped_refptr<base::SingleThreadTaskRunner> GetIOThreadTaskRunner() override;
   std::unique_ptr<base::SharedMemory> AllocateSharedMemory(
       size_t size) override;
 
   scoped_refptr<base::SingleThreadTaskRunner> main_task_runner_;
   scoped_refptr<base::SingleThreadTaskRunner> io_task_runner_;
   service_manager::Connector* connector_;
   service_manager::InterfaceProvider* interface_provider_;
   base::WaitableEvent shutdown_event_;
   std::unique_ptr<base::Thread> io_thread_;
   std::unique_ptr<ClientGpuMemoryBufferManager> gpu_memory_buffer_manager_;
 
   ui::mojom::GpuPtr gpu_;
   scoped_refptr<gpu::GpuChannelHost> gpu_channel_;
   std::vector<gpu::GpuChannelEstablishedCallback> establish_callbacks_;
 
   DISALLOW_COPY_AND_ASSIGN(Gpu);
 };
 
 }  // namespace ui
 
 #endif  // SERVICES_UI_PUBLIC_CPP_GPU_GPU_H_