Upgrade elements that are created before a custom element definition is registered

Source/core/dom/CustomElementDefinition.h

 /*
  * 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:
  *
  *     * 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 29 matching lines @@
 namespace WebCore {
 
 class ScriptState;
 
 class CustomElementDefinition : public RefCounted<CustomElementDefinition> {
 public:
     static PassRefPtr<CustomElementDefinition> create(ScriptState*, const AtomicString& type, const AtomicString& name, const AtomicString& namespaceURI, const ScriptValue& prototype);
 
     virtual ~CustomElementDefinition() {}
 
+    enum CustomElementKind {
+        CustomTag,
+        TypeExtension
+    };
+
     // This specifies whether the custom element is in the HTML or SVG
     // namespace.
     const AtomicString& namespaceURI() const { return m_tag.namespaceURI(); }
 
     // This uniquely identifies the Custom Element. For custom tags, this
     // is the tag name and the same as "name". For type extensions, this
     // is the value of the "is" attribute.
     const AtomicString& type() const { return m_type; }
 
     // This is the tag name of the Custom Element.
     const AtomicString& name() const { return m_tag.localName(); }
 
     // This is a convenience property derived from "namespaceURI" and
     // "name". Custom Elements of this kind will have this tag
     // name. This does not have a prefix.
     const QualifiedName& tagQName() const { return m_tag; }
 
+    CustomElementKind kind() const { return isTypeExtension() ? TypeExtension : CustomTag; }
     bool isTypeExtension() const { return type() != name(); }
 
     const ScriptValue& prototype() { return m_prototype; }
 
 private:
     CustomElementDefinition(const AtomicString& type, const AtomicString& name, const AtomicString& namespaceURI, const ScriptValue& prototype);
 
     ScriptValue m_prototype;
 
     AtomicString m_type;
     QualifiedName m_tag;
 };
 
 }
 
 #endif // CustomElementDefinition_h