Fix virtual/override/final usage in Source/modules/.

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 29 matching lines @@
 class Document;
 class Gamepad;
 class GamepadList;
 class Navigator;
 
 class MODULES_EXPORT NavigatorGamepad final : public GarbageCollectedFinalized<NavigatorGamepad>, public HeapSupplement<Navigator>, public DOMWindowProperty, public PlatformEventController, public DOMWindowLifecycleObserver {
     USING_GARBAGE_COLLECTED_MIXIN(NavigatorGamepad);
 public:
     static NavigatorGamepad* from(Document&);
     static NavigatorGamepad& from(Navigator&);
-    virtual ~NavigatorGamepad();
+    ~NavigatorGamepad() override;
 
     static GamepadList* getGamepads(Navigator&);
     GamepadList* gamepads();
 
     DECLARE_VIRTUAL_TRACE();
 
     void didConnectOrDisconnectGamepad(unsigned index, const WebGamepad&, bool connected);
 
 private:
     explicit NavigatorGamepad(LocalFrame*);
 
     static const char* supplementName();
 
     void dispatchOneEvent();
     void didRemoveGamepadEventListeners();
     bool startUpdatingIfAttached();
 
     // DOMWindowProperty
-    virtual void willDestroyGlobalObjectInFrame() override;
-    virtual void willDetachGlobalObjectFromFrame() override;
+    void willDestroyGlobalObjectInFrame() override;
+    void willDetachGlobalObjectFromFrame() override;
 
     // PlatformEventController
-    virtual void registerWithDispatcher() override;
-    virtual void unregisterWithDispatcher() override;
-    virtual bool hasLastData() override;
-    virtual void didUpdateData() override;
-    virtual void pageVisibilityChanged() override;
+    void registerWithDispatcher() override;
+    void unregisterWithDispatcher() override;
+    bool hasLastData() override;
+    void didUpdateData() override;
+    void pageVisibilityChanged() override;
 
     // DOMWindowLifecycleObserver
-    virtual void didAddEventListener(LocalDOMWindow*, const AtomicString&) override;
-    virtual void didRemoveEventListener(LocalDOMWindow*, const AtomicString&) override;
-    virtual void didRemoveAllEventListeners(LocalDOMWindow*) override;
+    void didAddEventListener(LocalDOMWindow*, const AtomicString&) override;
+    void didRemoveEventListener(LocalDOMWindow*, const AtomicString&) override;
+    void didRemoveAllEventListeners(LocalDOMWindow*) override;
 
     Member<GamepadList> m_gamepads;
     HeapDeque<Member<Gamepad>> m_pendingEvents;
     AsyncMethodRunner<NavigatorGamepad> m_dispatchOneEventRunner;
 };
 
 } // namespace blink
 
 #endif // NavigatorGamepad_h