Introduce a SVGUnknownElement class for unknown SVG elements

Source/core/dom/CustomElementRegistrationContext.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:
  *
  * 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 21 matching lines @@
 #include "core/dom/CustomElementRegistrationContext.h"
 
 #include "HTMLNames.h"
 #include "MathMLNames.h"
 #include "SVGNames.h"
 #include "core/dom/CustomElement.h"
 #include "core/dom/CustomElementDefinition.h"
 #include "core/dom/Element.h"
 #include "core/html/HTMLElement.h"
 #include "core/html/HTMLUnknownElement.h"
-#include "core/svg/SVGElement.h"
+#include "core/svg/SVGUnknownElement.h"
 #include "wtf/RefPtr.h"
 
 namespace WebCore {
 
 void CustomElementRegistrationContext::registerElement(Document* document, CustomElementConstructorBuilder* constructorBuilder, const AtomicString& type, ExceptionCode& ec)
 {
     CustomElementDefinition* definition = m_registry.registerElement(document, constructorBuilder, type, ec);
 
     if (!definition)
         return;
 
     // Upgrade elements that were waiting for this definition.
     const CustomElementUpgradeCandidateMap::ElementSet& upgradeCandidates = m_candidates.takeUpgradeCandidatesFor(definition->descriptor());
     for (CustomElementUpgradeCandidateMap::ElementSet::const_iterator it = upgradeCandidates.begin(); it != upgradeCandidates.end(); ++it)
         didResolveElement(definition, *it);
 }
 
 PassRefPtr<Element> CustomElementRegistrationContext::createCustomTagElement(Document* document, const QualifiedName& tagName)
 {
     ASSERT(isCustomTagName(tagName.localName()));
 
     if (!document)
         return 0;
 
     RefPtr<Element> element;
 
     if (HTMLNames::xhtmlNamespaceURI == tagName.namespaceURI()) {
         element = HTMLElement::create(tagName, document);
     } else if (SVGNames::svgNamespaceURI == tagName.namespaceURI()) {
-        element = SVGElement::create(tagName, document);
+        element = SVGUnknownElement::create(tagName, document);
     } else {
         // XML elements are not custom elements, so return early.
         return Element::create(tagName, document);
     }
 
     resolve(element.get(), nullAtom);
     return element.release();
 }
 
 void CustomElementRegistrationContext::didGiveTypeExtension(Element* element, const AtomicString& type)
@@ skipping 80 matching lines @@
         return;
 
     if (isCustomTagName(element->localName()))
         return; // custom tags take precedence over type extensions
 
     if (CustomElementRegistrationContext* context = element->document()->registrationContext())
         context->didGiveTypeExtension(element, type);
 }
 
 } // namespace WebCore