Renderer reading side of gamepad

content/renderer/gamepad_shared_memory_reader.h

+// Copyright (c) 2011 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 GAMEPAD_UTIL_H_
+#define GAMEPAD_UTIL_H_
+
+#include "base/shared_memory.h"
+#include "base/memory/scoped_ptr.h"
+#include "third_party/WebKit/Source/WebKit/chromium/public/WebGamepads.h"
+
+namespace gamepad {
+struct GamepadHardwareBuffer;
+}
+
+namespace content {
+
+class GamepadSharedMemoryReader {
+ public:
+  GamepadSharedMemoryReader();
+  virtual ~GamepadSharedMemoryReader();
+  void SampleGamepads(WebKit::WebGamepads&);
+
+ private:
+  base::SharedMemoryHandle renderer_shared_memory_handle_;
+  scoped_ptr<base::SharedMemory> renderer_shared_memory_;
+  gamepad::GamepadHardwareBuffer* gamepad_hardware_buffer_;
+
+  bool ever_interacted_with_[WebKit::WebGamepads::itemsLengthCap];
+};
+
+} // namespace content
+
+#endif  // GAMEPAD_UTIL_H_