Migrating majority of gamepad from content/browser/ to device/

content/browser/gamepad/gamepad_shared_buffer_impl.h

+// Copyright (c) 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_GAMEPAD_GAMEPAD_SHARED_BUFFER_IMPL_H_
+#define CONTENT_BROWSER_GAMEPAD_GAMEPAD_SHARED_BUFFER_IMPL_H_
+
+#include "device/gamepad/gamepad_shared_buffer.h"
+#include "third_party/WebKit/public/platform/WebGamepads.h"
+
+namespace content {
+
+struct GamepadHardwareBuffer;
+
+class GamepadSharedBufferImpl : public device::GamepadSharedBuffer {
+ public:
+  GamepadSharedBufferImpl();
+  ~GamepadSharedBufferImpl() override;
+
+  base::SharedMemory* shared_memory() override;
+  blink::WebGamepads* buffer() override;
+  GamepadHardwareBuffer* hardware_buffer();
+
+  void WriteBegin() override;
+  void WriteEnd() override;
+
+ private:
+  base::SharedMemory shared_memory_;
+
+  DISALLOW_COPY_AND_ASSIGN(GamepadSharedBufferImpl);
+};
+
+}  // namespace content
+
+#endif  // CONTENT_BROWSER_GAMEPAD_GAMEPAD_SHARED_BUFFER_IMPL_H_