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

Source/core/dom/MutationObserver.cpp

 /*
  * Copyright (C) 2011 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 93 matching lines @@
         bool value = false;
         if (optionsDictionary.get(booleanOptions[i].name, value) && value)
             options |= booleanOptions[i].value;
     }
 
     HashSet<AtomicString> attributeFilter;
     if (optionsDictionary.get("attributeFilter", attributeFilter))
         options |= AttributeFilter;
 
     if (!validateOptions(options)) {
-        ec = SYNTAX_ERR;
+        ec = SyntaxError;
         return;
     }
 
     node->registerMutationObserver(this, options, attributeFilter);
 }
 
 Vector<RefPtr<MutationRecord> > MutationObserver::takeRecords()
 {
     Vector<RefPtr<MutationRecord> > records;
     records.swap(m_records);
@@ skipping 113 matching lines @@
                 observers[i]->deliver();
             else
                 suspendedMutationObservers().add(observers[i]);
         }
     }
 
     deliveryInProgress = false;
 }
 
 } // namespace WebCore