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

Source/core/dom/CustomElementRegistry.cpp

 /*
  * Copyright (C) 2012 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:
  *
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
@@ skipping 79 matching lines @@
     if (!constructorBuilder->isFeatureAllowed())
         return;
 
     AtomicString type = userSuppliedName.lower();
     if (!isValidName(type)) {
         ec = InvalidCharacterError;
         return;
     }
 
     if (!constructorBuilder->validateOptions()) {
-        ec = INVALID_STATE_ERR;
+        ec = InvalidStateError;
         return;
     }
 
     QualifiedName tagName = nullQName();
     if (!constructorBuilder->findTagName(type, tagName)) {
-        ec = NAMESPACE_ERR;
+        ec = NamespaceError;
         return;
     }
     ASSERT(tagName.namespaceURI() == HTMLNames::xhtmlNamespaceURI || tagName.namespaceURI() == SVGNames::svgNamespaceURI);
 
     if (m_definitions.contains(type)) {
-        ec = INVALID_STATE_ERR;
+        ec = InvalidStateError;
         return;
     }
 
     RefPtr<CustomElementCallback> lifecycleCallbacks = constructorBuilder->createCallback(document());
 
     // Consulting the constructor builder could execute script and
     // kill the document.
     if (!document()) {
-        ec = INVALID_STATE_ERR;
+        ec = InvalidStateError;
         return;
     }
 
     RefPtr<CustomElementDefinition> definition = CustomElementDefinition::create(type, tagName.localName(), tagName.namespaceURI(), lifecycleCallbacks);
 
     if (!constructorBuilder->createConstructor(document(), definition.get())) {
         ec = NotSupportedError;
         return;
     }
 
@@ skipping 113 matching lines @@
     ASSERT(element->isCustomElement());
     m_candidates.remove(element);
 }
 
 inline Document* CustomElementRegistry::document() const
 {
     return toDocument(m_scriptExecutionContext);
 }
 
 }