Use DEFINE_NODE_TYPE_CASTS instead of using manual toSVGFooElement()

Source/core/svg/SVGFontFaceUriElement.h

Index: Source/core/svg/SVGFontFaceUriElement.h
diff --git a/Source/core/svg/SVGFontFaceUriElement.h b/Source/core/svg/SVGFontFaceUriElement.h
index 8a3f84eedd5cee50d59a4f303ae8120878b77388..61a3478dea1d64c101215f5a645fa4455d485fbd 100644
--- a/Source/core/svg/SVGFontFaceUriElement.h
+++ b/Source/core/svg/SVGFontFaceUriElement.h
@@ -52,11 +52,7 @@ private:
     ResourcePtr<FontResource> m_resource;
 };
 
-inline SVGFontFaceUriElement* toSVGFontFaceUriElement(Node* node)
-{
-    ASSERT_WITH_SECURITY_IMPLICATION(!node || node->hasTagName(SVGNames::font_face_uriTag));
-    return static_cast<SVGFontFaceUriElement*>(node);
-}
+DEFINE_NODE_TYPE_CASTS(SVGFontFaceUriElement, hasTagName(SVGNames::font_face_uriTag));
 
 } // namespace WebCore