Update remaining HTML classes to use OVERRIDE / FINAL when needed

Source/core/html/shadow/MediaControlsChromiumAndroid.h

 /*
  * Copyright (C) 2012 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 13 matching lines @@
  */
 
 #ifndef MediaControlsChromiumAndroid_h
 #define MediaControlsChromiumAndroid_h
 
 #include "core/html/shadow/MediaControls.h"
 #include "core/html/shadow/MediaControlsChromium.h"
 
 namespace WebCore {
 
-class MediaControlsChromiumAndroid : public MediaControlsChromium {
+class MediaControlsChromiumAndroid FINAL : public MediaControlsChromium {
 public:
     static PassRefPtr<MediaControlsChromiumAndroid> createControls(Document&);
 
     virtual void setMediaController(MediaControllerInterface*) OVERRIDE;
     virtual void playbackStarted() OVERRIDE;
     virtual void playbackStopped() OVERRIDE;
     virtual bool shouldHideControls() OVERRIDE { return true; }
 
-    void insertTextTrackContainer(PassRefPtr<MediaControlTextTrackContainerElement>) OVERRIDE;
+    virtual void insertTextTrackContainer(PassRefPtr<MediaControlTextTrackContainerElement>) OVERRIDE;
 
 private:
     explicit MediaControlsChromiumAndroid(Document&);
 
     MediaControlOverlayPlayButtonElement* m_overlayPlayButton;
     MediaControlOverlayEnclosureElement* m_overlayEnclosure;
 };
 
 }
 
 #endif