Remove mode-transition in TextTrack::setKind

third_party/WebKit/Source/core/html/track/TextTrack.cpp

 /*
  * Copyright (C) 2011 Google Inc.  All rights reserved.
  * Copyright (C) 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
@@ skipping 124 matching lines @@
 
     m_trackList = trackList;
     invalidateTrackIndex();
 }
 
 bool TextTrack::isVisualKind() const
 {
     return kind() == subtitlesKeyword() || kind() == captionsKeyword();
 }
 
-void TextTrack::setKind(const AtomicString& newKind)
-{
-    AtomicString oldKind = kind();
-    TrackBase::setKind(newKind);
-
-    // If kind changes from visual to non-visual and mode is 'showing', then force mode to 'hidden'.
-    // FIXME: This is not per spec. crbug.com/460923
-    if (oldKind != kind() && mode() == showingKeyword() && !isVisualKind())
-        setMode(hiddenKeyword());
-}
-
 void TextTrack::setMode(const AtomicString& mode)
 {
     ASSERT(mode == disabledKeyword() || mode == hiddenKeyword() || mode == showingKeyword());
 
     // On setting, if the new value isn't equal to what the attribute would currently
     // return, the new value must be processed as follows ...
     if (m_mode == mode)
         return;
 
     if (m_cues && cueTimeline()) {
@@ skipping 313 matching lines @@
     visitor->trace(m_trackList);
     TrackBase::trace(visitor);
     EventTargetWithInlineData::trace(visitor);
 }
 
 DEFINE_TRACE_WRAPPERS(TextTrack)
 {
     visitor->traceWrappers(m_cues);
 }
 } // namespace blink