Clean up unnecessary PassRefPtr.h include in modules

Source/modules/gamepad/GamepadList.h

 /*
  * Copyright (C) 2011, Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are met:
  *
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 12 matching lines @@
  * DAMAGE.
  */
 
 #ifndef GamepadList_h
 #define GamepadList_h
 
 #include "bindings/v8/ScriptWrappable.h"
 #include "modules/gamepad/Gamepad.h"
 #include "platform/heap/Handle.h"
 #include "public/platform/WebGamepads.h"
-#include "wtf/PassRefPtr.h"
 #include "wtf/RefCounted.h"
 #include "wtf/Vector.h"
 
 namespace WebCore {
 
 class GamepadList FINAL : public GarbageCollectedFinalized<GamepadList>, public ScriptWrappable {
 public:
     static GamepadList* create()
     {
         return new GamepadList();
     }
     ~GamepadList();
 
     void set(unsigned index, Gamepad*);
     Gamepad* item(unsigned index);
     unsigned length() const { return blink::WebGamepads::itemsLengthCap; }
 
     void trace(Visitor*);
 
 private:
     GamepadList();
     Member<Gamepad> m_items[blink::WebGamepads::itemsLengthCap];
 };
 
 } // namespace WebCore
 
 #endif // GamepadList_h