Remove the logic for de-duplicating in-band text track cues

Source/core/html/track/TextTrackCue.h

 /*
  * Copyright (C) 2011 Google Inc.  All rights reserved.
  * Copyright (C) 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 98 matching lines @@
 
     int size() const { return m_cueSize; }
     void setSize(int, ExceptionState&);
 
     const String& align() const;
     void setAlign(const String&, ExceptionState&);
 
     const String& text() const { return m_content; }
     void setText(const String&);
 
-    const String& cueSettings() const { return m_settings; }
-    void setCueSettings(const String&);
+    void parseSettings(const String&);
 
     int cueIndex();
     void invalidateCueIndex();
 
     PassRefPtr<DocumentFragment> getCueAsHTML();
     PassRefPtr<DocumentFragment> createCueRenderingTree();
 
     using EventTarget::dispatchEvent;
     virtual bool dispatchEvent(PassRefPtr<Event>) OVERRIDE;
 
@@ skipping 35 matching lines @@
     enum CueAlignment {
         Start = 0,
         Middle,
         End,
         Left,
         Right,
         NumberOfAlignments
     };
     CueAlignment getAlignment() const { return m_cueAlignment; }
 
-    bool operator==(const TextTrackCue&) const;
-    bool operator!=(const TextTrackCue& cue) const
-    {
-        return !(*this == cue);
-    }
-
     DEFINE_ATTRIBUTE_EVENT_LISTENER(enter);
     DEFINE_ATTRIBUTE_EVENT_LISTENER(exit);
 
 protected:
     TextTrackCue(Document&, double start, double end, const String& content);
 
 private:
     Document& document() const;
 
     PassRefPtr<TextTrackCueBox> displayTreeInternal();
 
     void createWebVTTNodeTree();
     void copyWebVTTNodeToDOMTree(ContainerNode* WebVTTNode, ContainerNode* root);
 
     std::pair<double, double> getPositionCoordinates() const;
-    void parseSettings(const String&);
 
     void determineTextDirection();
     void calculateDisplayParameters();
 
     void cueWillChange();
     void cueDidChange();
 
     enum CueSetting {
         None,
         Vertical,
         Line,
         Position,
         Size,
         Align,
         RegionId
     };
     CueSetting settingName(const String&);
 
     String m_id;
     double m_startTime;
     double m_endTime;
     String m_content;
-    String m_settings;
     int m_linePosition;
     int m_computedLinePosition;
     int m_textPosition;
     int m_cueSize;
     int m_cueIndex;
 
     WritingDirection m_writingDirection;
 
     CueAlignment m_cueAlignment;
 
@@ skipping 14 matching lines @@
     int m_displaySize;
 
     std::pair<float, float> m_displayPosition;
     String m_regionId;
     bool m_notifyRegion;
 };
 
 } // namespace WebCore
 
 #endif