Generate toSVGFooElement() for SVGFELight|AnimateMotion|FontFaceSrc|TextPositioningElement

Source/core/svg/SVGMPathElement.cpp

Index: Source/core/svg/SVGMPathElement.cpp
diff --git a/Source/core/svg/SVGMPathElement.cpp b/Source/core/svg/SVGMPathElement.cpp
index c67ca5b81b328c1d0cc7472cda1272c89bdba37f..8fb5460edd357d6103e1b69d5d59a437d2fb826c 100644
--- a/Source/core/svg/SVGMPathElement.cpp
+++ b/Source/core/svg/SVGMPathElement.cpp
@@ -155,7 +155,7 @@ void SVGMPathElement::targetPathChanged()
 void SVGMPathElement::notifyParentOfPathChange(ContainerNode* parent)
 {
     if (parent && parent->hasTagName(SVGNames::animateMotionTag))
-        static_cast<SVGAnimateMotionElement*>(parent)->updateAnimationPath();
+        toSVGAnimateMotionElement(parent)->updateAnimationPath();
 }
 
 } // namespace WebCore