Simplify SVGAnimat\w+Element::parseAttribute

Source/core/svg/SVGAnimateMotionElement.cpp

Index: Source/core/svg/SVGAnimateMotionElement.cpp
diff --git a/Source/core/svg/SVGAnimateMotionElement.cpp b/Source/core/svg/SVGAnimateMotionElement.cpp
index c85dfe598aa2f8ef77df70c343cd91c22b938d05..6f8032d8b3168c4263209fe8c51e8bd8b6a74484 100644
--- a/Source/core/svg/SVGAnimateMotionElement.cpp
+++ b/Source/core/svg/SVGAnimateMotionElement.cpp
@@ -91,21 +91,8 @@ bool SVGAnimateMotionElement::hasValidAttributeName()
     return true;
 }
 
-bool SVGAnimateMotionElement::isSupportedAttribute(const QualifiedName& attrName)
-{
-    DEFINE_STATIC_LOCAL(HashSet<QualifiedName>, supportedAttributes, ());
-    if (supportedAttributes.isEmpty())
-        supportedAttributes.add(SVGNames::pathAttr);
-    return supportedAttributes.contains<SVGAttributeHashTranslator>(attrName);
-}
-
 void SVGAnimateMotionElement::parseAttribute(const QualifiedName& name, const AtomicString& value)
 {
-    if (!isSupportedAttribute(name)) {
-        SVGAnimationElement::parseAttribute(name, value);
-        return;
-    }
-
     if (name == SVGNames::pathAttr) {
         m_path = Path();
         buildPathFromString(value, m_path);
@@ -113,7 +100,7 @@ void SVGAnimateMotionElement::parseAttribute(const QualifiedName& name, const At
         return;
     }
 
-    ASSERT_NOT_REACHED();
+    SVGAnimationElement::parseAttribute(name, value);
 }
 
 SVGAnimateMotionElement::RotateMode SVGAnimateMotionElement::rotateMode() const