Remove HTMLMediaElement::textTrackKindChanged

Source/core/html/HTMLMediaElement.cpp

 /*
  * Copyright (C) 2007, 2008, 2009, 2010, 2011, 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:
  * 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 1166 matching lines @@
     } else if (track->trackType() == TextTrack::AddTrack && track->mode() != TextTrack::disabledKeyword()) {
         cueTimeline().addCues(track, track->cues());
     }
 
     configureTextTrackDisplay(AssumeVisibleChange);
 
     ASSERT(textTracks()->contains(track));
     textTracks()->scheduleChangeEvent();
 }
 
-void HTMLMediaElement::textTrackKindChanged(TextTrack* track)
-{
-    if (track->kind() != TextTrack::captionsKeyword() && track->kind() != TextTrack::subtitlesKeyword() && track->mode() == TextTrack::showingKeyword())
-        track->setMode(TextTrack::hiddenKeyword());
-}
-
 bool HTMLMediaElement::isSafeToLoadURL(const KURL& url, InvalidURLAction actionIfInvalid)
 {
     if (!url.isValid()) {
         WTF_LOG(Media, "HTMLMediaElement::isSafeToLoadURL(%p, %s) -> FALSE because url is invalid", this, urlForLoggingMedia(url).utf8().data());
         return false;
     }
 
     LocalFrame* frame = document().frame();
     if (!frame || !document().securityOrigin()->canDisplay(url)) {
         if (actionIfInvalid == Complain)
@@ skipping 2429 matching lines @@
 
 #if ENABLE(WEB_AUDIO)
 void HTMLMediaElement::clearWeakMembers(Visitor* visitor)
 {
     if (!visitor->isAlive(m_audioSourceNode) && audioSourceProvider())
         audioSourceProvider()->setClient(nullptr);
 }
 #endif
 
 }