Intorudce DECLARE/DEFINE_ELEMENT_FACTORY_WITH_TAGNAME macros.

Source/core/html/HTMLModElement.cpp

Index: Source/core/html/HTMLModElement.cpp
diff --git a/Source/core/html/HTMLModElement.cpp b/Source/core/html/HTMLModElement.cpp
index fa75f27aa71aa9505e08418e51e5b4d0c6d99826..c62df2b5121ac5eaee5a643a2b1ae64e1126522d 100644
--- a/Source/core/html/HTMLModElement.cpp
+++ b/Source/core/html/HTMLModElement.cpp
@@ -35,10 +35,7 @@ inline HTMLModElement::HTMLModElement(const QualifiedName& tagName, Document& do
     ScriptWrappable::init(this);
 }
 
-PassRefPtrWillBeRawPtr<HTMLModElement> HTMLModElement::create(const QualifiedName& tagName, Document& document)
-{
-    return adoptRefWillBeRefCountedGarbageCollected(new HTMLModElement(tagName, document));
-}
+DEFINE_ELEMENT_FACTORY_WITH_TAGNAME(HTMLModElement)
 
 bool HTMLModElement::isURLAttribute(const Attribute& attribute) const
 {