Enable WebVTT regions for runtime testing, updated tests and minor fixes

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 114 matching lines @@
 
     int cueIndex();
     void invalidateCueIndex();
 
     PassRefPtr<DocumentFragment> getCueAsHTML();
     PassRefPtr<DocumentFragment> createCueRenderingTree();
 
     using EventTarget::dispatchEvent;
     virtual bool dispatchEvent(PassRefPtr<Event>) OVERRIDE;
 
-#if ENABLE(WEBVTT_REGIONS)
     const String& regionId() const { return m_regionId; }
     void setRegionId(const String&);
-#endif
+    void notifyRegionWhenRemovingDisplayTree(bool);
 
     bool isActive();
     void setIsActive(bool);
 
     bool hasDisplayTree() const { return m_displayTree; }
     PassRefPtr<TextTrackCueBox> getDisplayTree(const IntSize& videoSize);
     PassRefPtr<HTMLDivElement> element() const { return m_cueBackgroundBox; }
 
     void updateDisplayTree(double);
     void removeDisplayTree();
@@ skipping 72 matching lines @@
     virtual void refEventTarget() { ref(); }
     virtual void derefEventTarget() { deref(); }
 
     enum CueSetting {
         None,
         Vertical,
         Line,
         Position,
         Size,
         Align,
-#if ENABLE(WEBVTT_REGIONS)
         RegionId
-#endif
     };
     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;
@@ skipping 21 matching lines @@
     RefPtr<TextTrackCueBox> m_displayTree;
 
     CSSValueID m_displayDirection;
 
     CSSValueID m_displayWritingModeMap[NumberOfWritingDirections];
     CSSValueID m_displayWritingMode;
 
     int m_displaySize;
 
     std::pair<float, float> m_displayPosition;
-#if ENABLE(WEBVTT_REGIONS)
     String m_regionId;
-#endif
+    bool m_notifyRegion;
 };
 
 } // namespace WebCore
 
 #endif