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

Source/modules/geolocation/GeolocationController.h

 /*
  * Copyright (C) 2009 Apple 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 46 matching lines @@
     void positionChanged(GeolocationPosition*);
     void errorOccurred(GeolocationError*);
 
     GeolocationPosition* lastPosition();
 
     void setClientForTest(GeolocationClient*);
     bool hasClientForTest() { return m_hasClientForTest; }
     GeolocationClient* client() { return m_client; }
 
     // Inherited from PageLifecycleObserver.
-    virtual void pageVisibilityChanged() override;
+    void pageVisibilityChanged() override;
 
     static const char* supplementName();
     static GeolocationController* from(LocalFrame* frame) { return static_cast<GeolocationController*>(WillBeHeapSupplement<LocalFrame>::from(frame, supplementName())); }
 
     // Inherited from Supplement.
     DECLARE_VIRTUAL_TRACE();
 
 private:
     GeolocationController(LocalFrame&, GeolocationClient*);
 
     void startUpdatingIfNeeded();
     void stopUpdatingIfNeeded();
 
     RawPtrWillBeMember<GeolocationClient> m_client;
     bool m_hasClientForTest;
 
     PersistentWillBeMember<GeolocationPosition> m_lastPosition;
     typedef PersistentHeapHashSetWillBeHeapHashSet<Member<Geolocation>> ObserversSet;
     // All observers; both those requesting high accuracy and those not.
     ObserversSet m_observers;
     ObserversSet m_highAccuracyObservers;
     bool m_isClientUpdating;
 };
 
 } // namespace blink
 
 #endif // GeolocationController_h