mus: Use ui::ContextProviderCommandBuffer.

services/ui/public/cpp/gles2_context.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 SERVICES_UI_PUBLIC_CPP_GLES2_CONTEXT_H_
-#define SERVICES_UI_PUBLIC_CPP_GLES2_CONTEXT_H_
-
-#include <stdint.h>
-
-#include <memory>
-#include <vector>
-
-#include "base/macros.h"
-#include "base/single_thread_task_runner.h"
-#include "gpu/command_buffer/client/gles2_implementation.h"
-
-namespace gpu {
-
-class CommandBufferProxyImpl;
-class GpuChannelHost;
-class TransferBuffer;
-
-namespace gles2 {
-class GLES2CmdHelper;
-}
-
-}  // namespace gpu
-
-namespace ui {
-
-class GLES2Context {
- public:
-  ~GLES2Context();
-  gpu::gles2::GLES2Interface* interface() const {
-    return implementation_.get();
-  }
-  gpu::ContextSupport* context_support() const { return implementation_.get(); }
-
-  static std::unique_ptr<GLES2Context> CreateOffscreenContext(
-      scoped_refptr<gpu::GpuChannelHost> gpu_channel_host,
-      scoped_refptr<base::SingleThreadTaskRunner> task_runner);
-
- private:
-  GLES2Context();
-  bool Initialize(scoped_refptr<gpu::GpuChannelHost> gpu_channel_host,
-                  scoped_refptr<base::SingleThreadTaskRunner> task_runner);
-
-  std::unique_ptr<gpu::CommandBufferProxyImpl> command_buffer_proxy_impl_;
-  std::unique_ptr<gpu::gles2::GLES2CmdHelper> gles2_helper_;
-  std::unique_ptr<gpu::TransferBuffer> transfer_buffer_;
-  std::unique_ptr<gpu::gles2::GLES2Implementation> implementation_;
-
-  DISALLOW_COPY_AND_ASSIGN(GLES2Context);
-};
-
-}  // namespace ui
-
-#endif  // SERVICES_UI_PUBLIC_CPP_GLES2_CONTEXT_H_