Implement the gamepad API in the IPC proxy

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