Update modules classes to use OVERRIDE / FINAL when needed

Source/modules/gamepad/NavigatorGamepad.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 15 matching lines @@
 #ifndef NavigatorGamepad_h
 #define NavigatorGamepad_h
 
 #include "platform/Supplementable.h"
 
 namespace WebCore {
 
 class GamepadList;
 class Navigator;
 
-class NavigatorGamepad : public Supplement<Navigator> {
+class NavigatorGamepad FINAL : public Supplement<Navigator> {
 public:
     virtual ~NavigatorGamepad();
     static NavigatorGamepad* from(Navigator*);
 
     static GamepadList* webkitGetGamepads(Navigator*);
 
     GamepadList* gamepads();
 
 private:
     NavigatorGamepad();
     static const char* supplementName();
 
     RefPtr<GamepadList> m_gamepads;
 };
 
 } // namespace WebCore
 
 #endif // NavigatorGamepad_h