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

Source/core/html/track/TextTrackRegion.cpp

 /*
  * Copyright (C) 2013 Google 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.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 181 matching lines @@
         return upScrollValueKeyword;
 
     return "";
 }
 
 void TextTrackRegion::setScroll(const AtomicString& value, ExceptionCode& ec)
 {
     DEFINE_STATIC_LOCAL(const AtomicString, upScrollValueKeyword, ("up", AtomicString::ConstructFromLiteral));
 
     if (value != emptyString() && value != upScrollValueKeyword) {
-        ec = SYNTAX_ERR;
+        ec = SyntaxError;
         return;
     }
 
     m_scroll = value == upScrollValueKeyword;
 }
 
 void TextTrackRegion::updateParametersFromRegion(TextTrackRegion* region)
 {
     m_heightInLines = region->height();
     m_width = region->width();
@@ skipping 284 matching lines @@
 {
     LOG(Media, "TextTrackRegion::scrollTimerFired");
 
     stopTimer();
     displayLastTextTrackCueBox();
 }
 
 } // namespace WebCore
 
 #endif