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

Source/core/css/CSSStyleSheet.cpp

 /*
  * (C) 1999-2003 Lars Knoll (knoll@kde.org)
  * Copyright (C) 2004, 2006, 2007, 2012 Apple Inc. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  *
  * This library is distributed in the hope that it will be useful,
@@ skipping 260 matching lines @@
 
     ec = 0;
     if (index > length()) {
         ec = IndexSizeError;
         return 0;
     }
     CSSParser p(m_contents->parserContext(), UseCounter::getFrom(this));
     RefPtr<StyleRuleBase> rule = p.parseRule(m_contents.get(), ruleString);
 
     if (!rule) {
-        ec = SYNTAX_ERR;
+        ec = SyntaxError;
         return 0;
     }
     RuleMutationScope mutationScope(this);
 
     bool success = m_contents->wrapperInsertRule(rule, index);
     if (!success) {
         ec = HierarchyRequestError;
         return 0;
     }        
     if (!m_childRuleCSSOMWrappers.isEmpty())
@@ skipping 89 matching lines @@
         root = root->parentStyleSheet();
     return root->ownerNode() ? root->ownerNode()->document() : 0;
 }
 
 void CSSStyleSheet::clearChildRuleCSSOMWrappers()
 {
     m_childRuleCSSOMWrappers.clear();
 }
 
 }