content: Use mus client-lib's gpu-service from renderers.

content/browser/gpu/gpu_client.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 CONTENT_BROWSER_GPU_GPU_CLIENT_H_
+#define CONTENT_BROWSER_GPU_GPU_CLIENT_H_
+
+#include "base/memory/weak_ptr.h"
+#include "ipc/ipc_channel_handle.h"
+#include "mojo/public/cpp/bindings/binding_set.h"
+#include "services/ui/public/interfaces/gpu.mojom.h"
+
+namespace content {
+
+class GpuClient : public ui::mojom::Gpu {
+ public:
+  explicit GpuClient(int render_process_id);
+  ~GpuClient() override;
+
+  void Add(ui::mojom::GpuRequest request);
+
+ private:
+  void OnError();
+  void OnEstablishGpuChannel(const EstablishGpuChannelCallback& callback,
+                             const IPC::ChannelHandle& channel,
+                             const gpu::GPUInfo& gpu_info);
+  void OnCreateGpuMemoryBuffer(const CreateGpuMemoryBufferCallback& callback,
+                               const gfx::GpuMemoryBufferHandle& handle);
+
+  // ui::mojom::Gpu overrides:
+  void EstablishGpuChannel(
+      const EstablishGpuChannelCallback& callback) override;
+  void CreateGpuMemoryBuffer(
+      gfx::GpuMemoryBufferId id,
+      const gfx::Size& size,
+      gfx::BufferFormat format,
+      gfx::BufferUsage usage,
+      const ui::mojom::Gpu::CreateGpuMemoryBufferCallback& callback) override;
+  void DestroyGpuMemoryBuffer(gfx::GpuMemoryBufferId id,
+                              const gpu::SyncToken& sync_token) override;
+
+  const int render_process_id_;
+  mojo::BindingSet<ui::mojom::Gpu> bindings_;
+  base::WeakPtrFactory<GpuClient> weak_factory_;
+
+  DISALLOW_COPY_AND_ASSIGN(GpuClient);
+};
+
+}  // namespace content
+
+#endif  // CONTENT_BROWSER_GPU_GPU_CLIENT_H_