services/ui: Use new gpu::GpuInit to do the GPU initialization.

services/ui/gpu/gpu_main.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_GPU_GPU_MAIN_H_
+#define SERVICES_UI_GPU_GPU_MAIN_H_
+
+#include "gpu/ipc/service/gpu_init.h"
+#include "services/ui/gpu/interfaces/gpu_service_internal.mojom.h"
+
+namespace gpu {
+class GpuMemoryBufferFactory;
+}
+
+namespace ui {
+
+class GpuServiceInternal;
+
+class GpuMain : public gpu::GpuSandboxHelper {
+ public:
+  GpuMain();
+  ~GpuMain() override;
+
+  void Add(mojom::GpuServiceInternalRequest request);
+
+  GpuServiceInternal* gpu_service() { return gpu_service_internal_.get(); }
+
+ private:
+  // gpu::GpuSandboxHelper:
+  void PreSandboxStartup() override;
+  bool EnsureSandboxInitialized() override;
+
+  std::unique_ptr<GpuServiceInternal> gpu_service_internal_;
+  gpu::GpuInit gpu_init_;
+  std::unique_ptr<gpu::GpuMemoryBufferFactory> gpu_memory_buffer_factory_;
+
+  DISALLOW_COPY_AND_ASSIGN(GpuMain);
+};
+
+}  // namespace ui
+
+#endif  // SERVICES_UI_GPU_GPU_MAIN_H_