Generate toFooElement() functions from tagname data

Source/core/svg/SVGClipPathElement.h

Index: Source/core/svg/SVGClipPathElement.h
diff --git a/Source/core/svg/SVGClipPathElement.h b/Source/core/svg/SVGClipPathElement.h
index 80f6be944eacaf03974c3d38c400daf0deb9f4fa..b820df68d76ee2555ce543846209f953975db86a 100644
--- a/Source/core/svg/SVGClipPathElement.h
+++ b/Source/core/svg/SVGClipPathElement.h
@@ -21,7 +21,6 @@
 #ifndef SVGClipPathElement_h
 #define SVGClipPathElement_h
 
-#include "SVGNames.h"
 #include "core/svg/SVGAnimatedBoolean.h"
 #include "core/svg/SVGAnimatedEnumeration.h"
 #include "core/svg/SVGExternalResourcesRequired.h"
@@ -56,12 +55,6 @@ private:
     END_DECLARE_ANIMATED_PROPERTIES
 };
 
-inline SVGClipPathElement* toSVGClipPathElement(Node* node)
-{
-    ASSERT_WITH_SECURITY_IMPLICATION(!node || node->hasTagName(SVGNames::clipPathTag));
-    return static_cast<SVGClipPathElement*>(node);
-}
-
 }
 
 #endif