Fix virtual/override/final usage in Source/core/html/.

Source/core/html/track/TextTrackCue.h

 /*
  * Copyright (C) 2011 Google Inc.  All rights reserved.
  * Copyright (C) 2012, 2013 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
@@ skipping 33 matching lines @@
 class TextTrackCue : public EventTargetWithInlineData, public RefCountedWillBeNoBase<TextTrackCue> {
     DEFINE_WRAPPERTYPEINFO();
     REFCOUNTED_EVENT_TARGET(TextTrackCue);
 public:
     static const AtomicString& cueShadowPseudoId()
     {
         DEFINE_STATIC_LOCAL(const AtomicString, cue, ("cue", AtomicString::ConstructFromLiteral));
         return cue;
     }
 
-    virtual ~TextTrackCue() { }
+    ~TextTrackCue() override { }
 
     TextTrack* track() const;
     void setTrack(TextTrack*);
 
     Node* owner() const;
 
     const AtomicString& id() const { return m_id; }
     void setId(const AtomicString&);
 
     double startTime() const { return m_startTime; }
     void setStartTime(double);
 
     double endTime() const { return m_endTime; }
     void setEndTime(double);
 
     bool pauseOnExit() const { return m_pauseOnExit; }
     void setPauseOnExit(bool);
 
     unsigned cueIndex();
     void updateCueIndex(unsigned cueIndex) { m_cueIndex = cueIndex; }
     void invalidateCueIndex();
 
     using EventTarget::dispatchEvent;
-    virtual bool dispatchEvent(PassRefPtrWillBeRawPtr<Event>) override;
+    bool dispatchEvent(PassRefPtrWillBeRawPtr<Event>) override;
 
     bool isActive() const { return m_isActive; }
     void setIsActive(bool active) { m_isActive = active; }
 
     // Updates the display tree and appends it to container if it has not
     // already been added.
     virtual void updateDisplay(HTMLDivElement& container) = 0;
 
     // Marks the nodes of the display tree as past or future relative to
     // movieTime. If updateDisplay() has not been called there is no display
     // tree and nothing is done.
     virtual void updatePastAndFutureNodes(double movieTime) = 0;
 
     // FIXME: Refactor to eliminate removeDisplayTree(). https://crbug.com/322434
     enum RemovalNotification {
         DontNotifyRegion,
         NotifyRegion
     };
     virtual void removeDisplayTree(RemovalNotification = NotifyRegion) = 0;
 
-    virtual const AtomicString& interfaceName() const override;
+    const AtomicString& interfaceName() const override;
 
 #ifndef NDEBUG
     virtual String toString() const = 0;
 #endif
 
     DEFINE_ATTRIBUTE_EVENT_LISTENER(enter);
     DEFINE_ATTRIBUTE_EVENT_LISTENER(exit);
 
     DECLARE_VIRTUAL_TRACE();
 
@@ skipping 12 matching lines @@
 
     unsigned m_cueIndex;
 
     bool m_isActive : 1;
     bool m_pauseOnExit : 1;
 };
 
 } // namespace blink
 
 #endif // TextTrackCue_h