Dartium support for manual custom element upgrades.

Source/bindings/dart/DartCustomElementConstructorBuilder.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 73 matching lines @@
         localName = m_extendsTagName.lower();
 
         Dart_Handle nativeElement = DartUtilities::getAndValidateNativeType(m_customType, m_extendsTagName);
         if (!nativeElement || Dart_IsNull(nativeElement)) {
             CustomElementException::throwException(CustomElementException::ExtendsIsInvalidName, type, es);
             return false;
         }
 
         m_nativeClassId = reinterpret_cast<intptr_t>(DartDOMWrapper::readNativePointer(nativeElement, DartDOMWrapper::kNativeTypeIndex));
 
-        // TODO: enable once we pick up Blink version 31
-        // if (!Document::isValidName(localName)) {
-        //     CustomElementException::throwException(CustomElementException::ExtendsIsInvalidName, type, es);
-        //     return false;
-        // }
-        // if (CustomElement::isValidName(localName)) {
-        //     CustomElementException::throwException(CustomElementException::ExtendsIsCustomElementName, type, es);
-        //     return false;
-        // }
+        if (!Document::isValidName(localName)) {
+            CustomElementException::throwException(CustomElementException::ExtendsIsInvalidName, type, es);
+            return false;
+        }
+        if (CustomElement::isValidName(localName)) {
+            CustomElementException::throwException(CustomElementException::ExtendsIsCustomElementName, type, es);
+            return false;
+        }
     } else {
         localName = type;
         m_nativeClassId = DartHTMLElement::dartClassId;
     }
 
     m_localName = localName;
     m_namespaceURI = namespaceURI;
     findTagName(type, tagName);
     return true;
 }
@@ skipping 25 matching lines @@
 {
     return m_callbacks->setBinding(definition, DartCustomElementBinding::create(m_customType, m_nativeClassId));
 }
 
 ScriptValue DartCustomElementConstructorBuilder::bindingsReturnValue() const
 {
     // Dart does not return a constructor.
     return ScriptValue();
 }
 } // namespace WebCore