Rename ExceptionCode constants to use the names in the spec (2/3)

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 254 matching lines @@
 
     // 1. If the given cue is not currently listed in the method's TextTrack 
     // object's text track's text track list of cues, then throw a NotFoundError exception.
     if (cue->track() != this) {
         ec = NotFoundError;
         return;
     }
 
     // 2. Remove cue from the method's TextTrack object's text track's text track list of cues.
     if (!m_cues || !m_cues->remove(cue)) {
-        ec = INVALID_STATE_ERR;
+        ec = InvalidStateError;
         return;
     }
 
     cue->setTrack(0);
     if (m_client)
         m_client->textTrackRemoveCue(this, cue);
 }
 
 #if ENABLE(WEBVTT_REGIONS)
 TextTrackRegionList* TextTrack::regionList()
@@ skipping 59 matching lines @@
         return;
 
     // 1. If the given region is not currently listed in the method's TextTrack
     // object's text track list of regions, then throw a NotFoundError exception.
     if (region->track() != this) {
         ec = NotFoundError;
         return;
     }
 
     if (!m_regions || !m_regions->remove(region)) {
-        ec = INVALID_STATE_ERR;
+        ec = InvalidStateError;
         return;
     }
 
     region->setTrack(0);
 }
 #endif
 
 void TextTrack::cueWillChange(TextTrackCue* cue)
 {
     if (!m_client)
@@ skipping 123 matching lines @@
 {
     // "Main program" content is intrinsic to the presentation of the media file, regardless of locale. Content such as
     // directors commentary is not "main program" because it is not essential for the presentation. HTML5 doesn't have
     // a way to express this in a machine-reable form, it is typically done with the track label, so we assume that caption
     // tracks are main content and all other track types are not.
     return m_kind == captionsKeyword();
 }
 
 } // namespace WebCore