Merge 141127

Source/WebCore/html/track/TextTrackCue.cpp

 /*
  * Copyright (C) 2011 Google Inc.  All rights reserved.
  * Copyright (C) 2011, 2012 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 213 matching lines @@
     // direction is vertical growing left, then let writing-mode be
     // 'vertical-rl'. Otherwise, the text track cue writing direction is
     // vertical growing right; let writing-mode be 'vertical-lr'.
     m_displayWritingModeMap[Horizontal] = CSSValueHorizontalTb;
     m_displayWritingModeMap[VerticalGrowingLeft] = CSSValueVerticalRl;
     m_displayWritingModeMap[VerticalGrowingRight] = CSSValueVerticalLr;
 }
 
 TextTrackCue::~TextTrackCue()
 {
+    removeDisplayTree();
 }
 
 void TextTrackCue::cueWillChange()
 {
     if (m_track)
         m_track->cueWillChange(this);
 }
 
 void TextTrackCue::cueDidChange()
 {
@@ skipping 812 matching lines @@
 }
 
 EventTargetData* TextTrackCue::ensureEventTargetData()
 {
     return &m_eventTargetData;
 }
 
 } // namespace WebCore
 
 #endif