Generate toFooElement() functions from tagname data

Source/core/html/HTMLMeterElement.h

Index: Source/core/html/HTMLMeterElement.h
diff --git a/Source/core/html/HTMLMeterElement.h b/Source/core/html/HTMLMeterElement.h
index 2e1d6b654b02ac78bf8ec17d9678a3877a9dc3fd..acc70b016ffdded412760d84fa44f2480027def6 100644
--- a/Source/core/html/HTMLMeterElement.h
+++ b/Source/core/html/HTMLMeterElement.h
@@ -86,12 +86,6 @@ inline bool isHTMLMeterElement(Node* node)
     return node->hasTagName(HTMLNames::meterTag);
 }
 
-inline HTMLMeterElement* toHTMLMeterElement(Node* node)
-{
-    ASSERT_WITH_SECURITY_IMPLICATION(!node || isHTMLMeterElement(node));
-    return static_cast<HTMLMeterElement*>(node);
-}
-
 } // namespace
 
 #endif