Generate toFooElement() functions from tagname data

Source/core/html/HTMLAnchorElement.h

Index: Source/core/html/HTMLAnchorElement.h
diff --git a/Source/core/html/HTMLAnchorElement.h b/Source/core/html/HTMLAnchorElement.h
index a3410b56333c1780ad02b8b5e52414ebb098ac00..cc9685d13b64633263bcf069a2d789b6ea107fb7 100644
--- a/Source/core/html/HTMLAnchorElement.h
+++ b/Source/core/html/HTMLAnchorElement.h
@@ -168,12 +168,6 @@ inline bool isHTMLAnchorElement(const Element* element)
     return element->hasTagName(HTMLNames::aTag);
 }
 
-inline HTMLAnchorElement* toHTMLAnchorElement(Node* node)
-{
-    ASSERT_WITH_SECURITY_IMPLICATION(!node || isHTMLAnchorElement(node));
-    return static_cast<HTMLAnchorElement*>(node);
-}
-
 } // namespace WebCore
 
 #endif // HTMLAnchorElement_h