Generate toFooElement() functions from tagname data

Source/core/svg/SVGRectElement.h

Index: Source/core/svg/SVGRectElement.h
diff --git a/Source/core/svg/SVGRectElement.h b/Source/core/svg/SVGRectElement.h
index 2c631b81ac7145596f5b990fde15055413e8d302..34611060b7ea398438849a4c3d9b0a519f1a951b 100644
--- a/Source/core/svg/SVGRectElement.h
+++ b/Source/core/svg/SVGRectElement.h
@@ -21,7 +21,6 @@
 #ifndef SVGRectElement_h
 #define SVGRectElement_h
 
-#include "SVGNames.h"
 #include "core/svg/SVGAnimatedBoolean.h"
 #include "core/svg/SVGAnimatedLength.h"
 #include "core/svg/SVGExternalResourcesRequired.h"
@@ -59,12 +58,6 @@ private:
     END_DECLARE_ANIMATED_PROPERTIES
 };
 
-inline SVGRectElement* toSVGRectElement(Node* node)
-{
-    ASSERT_WITH_SECURITY_IMPLICATION(!node || node->hasTagName(SVGNames::rectTag));
-    return static_cast<SVGRectElement*>(node);
-}
-
 } // namespace WebCore
 
 #endif