Generate toFooElement() functions from tagname data

Source/core/svg/SVGRadialGradientElement.h

Index: Source/core/svg/SVGRadialGradientElement.h
diff --git a/Source/core/svg/SVGRadialGradientElement.h b/Source/core/svg/SVGRadialGradientElement.h
index 4b7c376a3ac6a2f9c7572631588d4a308800c774..ebc7f1aeed21db7dbeee0a5f21617eb53af90c45 100644
--- a/Source/core/svg/SVGRadialGradientElement.h
+++ b/Source/core/svg/SVGRadialGradientElement.h
@@ -21,7 +21,6 @@
 #ifndef SVGRadialGradientElement_h
 #define SVGRadialGradientElement_h
 
-#include "SVGNames.h"
 #include "core/svg/SVGAnimatedLength.h"
 #include "core/svg/SVGGradientElement.h"
 
@@ -56,12 +55,6 @@ private:
     END_DECLARE_ANIMATED_PROPERTIES
 };
 
-inline SVGRadialGradientElement* toSVGRadialGradientElement(Node* node)
-{
-    ASSERT_WITH_SECURITY_IMPLICATION(!node || node->hasTagName(SVGNames::radialGradientTag));
-    return static_cast<SVGRadialGradientElement*>(node);
-}
-
 } // namespace WebCore
 
 #endif