Add embedder api for participating in gpu logic

content/public/gpu/content_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_PUBLIC_GPU_CONTENT_GPU_CLIENT_H_
+#define CONTENT_PUBLIC_GPU_CONTENT_GPU_CLIENT_H_
+
+#include "content/public/common/content_client.h"
+
+namespace content {
+
+class ServiceRegistry;
+
+// Embedder API for participating in gpu logic.
+class CONTENT_EXPORT ContentGpuClient {
+ public:
+  virtual ~ContentGpuClient() {}
+
+  // Registers Mojo services.
+  virtual void RegisterMojoServices(ServiceRegistry* registry) {}
+};
+
+}  // namespace content
+
+#endif  // CONTENT_PUBLIC_GPU_CONTENT_GPU_CLIENT_H_