Generate toSVGSVG|Stop|TextContentElement()

Source/core/svg/SVGTextContentElement.h

Index: Source/core/svg/SVGTextContentElement.h
diff --git a/Source/core/svg/SVGTextContentElement.h b/Source/core/svg/SVGTextContentElement.h
index 255330e8692839481f145cb3c6a4567dfefb06d0..db0b622d8b94d20a2541d8d1a26c4330edddeed8 100644
--- a/Source/core/svg/SVGTextContentElement.h
+++ b/Source/core/svg/SVGTextContentElement.h
@@ -122,12 +122,13 @@ private:
     END_DECLARE_ANIMATED_PROPERTIES
 };
 
-inline SVGTextContentElement* toSVGTextContentElement(SVGElement* element)
+inline bool isSVGTextContentElement(const Node& node)
 {
-    ASSERT_WITH_SECURITY_IMPLICATION(!element || element->isTextContent());
-    return static_cast<SVGTextContentElement*>(element);
+    return node.isSVGElement() && toSVGElement(node).isTextContent();
 }
 
+DEFINE_NODE_TYPE_CASTS_WITH_FUNCTION(SVGTextContentElement);
+
 } // namespace WebCore
 
 #endif