Ignore MediaController in the video fullscreen button logic

Source/core/html/MediaController.cpp

 /*
  * Copyright (C) 2011 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 547 matching lines @@
 
 bool MediaController::hasAudio() const
 {
     for (size_t index = 0; index < m_mediaElements.size(); ++index) {
         if (m_mediaElements[index]->hasAudio())
             return true;
     }
     return false;
 }
 
-bool MediaController::hasVideo() const
-{
-    for (size_t index = 0; index < m_mediaElements.size(); ++index) {
-        if (m_mediaElements[index]->hasVideo())
-            return true;
-    }
-    return false;
-}
-
 void MediaController::beginScrubbing()
 {
     for (size_t index = 0; index < m_mediaElements.size(); ++index)
         m_mediaElements[index]->beginScrubbing();
     if (m_playbackState == PLAYING)
         m_clock->stop();
 }
 
 void MediaController::endScrubbing()
 {
@@ skipping 41 matching lines @@
 {
     double now = WTF::currentTime();
     double timedelta = now - m_previousTimeupdateTime;
 
     if (timedelta < maxTimeupdateEventFrequency)
         return;
 
     scheduleEvent(EventTypeNames::timeupdate);
     m_previousTimeupdateTime = now;
 }