Remove TextTrackCue::notifyRegionWhenRemovingDisplayTree

Source/core/html/track/vtt/VTTCue.h

 /*
  * Copyright (c) 2013, Opera Software ASA. 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 93 matching lines @@
     void parseSettings(const String&);
 
     PassRefPtrWillBeRawPtr<DocumentFragment> getCueAsHTML();
 
     const String& regionId() const { return m_regionId; }
     void setRegionId(const String&);
 
     virtual void updateDisplay(HTMLDivElement& container) override;
 
     virtual void updateDisplayTree(double movieTime) override;
-    virtual void removeDisplayTree() override;
-    virtual void notifyRegionWhenRemovingDisplayTree(bool notifyRegion) override;
+    virtual void removeDisplayTree(RemovalNotification) override;
 
     void markFutureAndPastNodes(ContainerNode*, double previousTimestamp, double movieTime);
 
     float calculateComputedLinePosition() const;
 
     enum WritingDirection {
         Horizontal = 0,
         VerticalGrowingLeft,
         VerticalGrowingRight,
         NumberOfWritingDirections
@@ skipping 56 matching lines @@
     WritingDirection m_writingDirection;
     CueAlignment m_cueAlignment;
     String m_regionId;
 
     RefPtrWillBeMember<DocumentFragment> m_vttNodeTree;
     RefPtrWillBeMember<HTMLDivElement> m_cueBackgroundBox;
     RefPtrWillBeMember<VTTCueBox> m_displayTree;
 
     bool m_snapToLines : 1;
     bool m_displayTreeShouldChange : 1;
-    bool m_notifyRegion : 1;
 };
 
 // VTTCue is currently the only TextTrackCue subclass.
 DEFINE_TYPE_CASTS(VTTCue, TextTrackCue, cue, true, true);
 
 } // namespace blink
 
 #endif // VTTCue_h