SVGElement::parseAttribute resolves property via property map (Step 2.4)

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 dcb322148a96dca6ca70017adfcb759623948b3d..e6825172a640759bfd41091868c5944b3d78fd7d 100644
--- a/Source/core/svg/SVGMPathElement.cpp
+++ b/Source/core/svg/SVGMPathElement.cpp
@@ -91,44 +91,20 @@ void SVGMPathElement::removedFrom(ContainerNode* rootParent)
         clearResourceReferences();
 }
 
-bool SVGMPathElement::isSupportedAttribute(const QualifiedName& attrName)
-{
-    DEFINE_STATIC_LOCAL(HashSet<QualifiedName>, supportedAttributes, ());
-    if (supportedAttributes.isEmpty()) {
-        SVGURIReference::addSupportedAttributes(supportedAttributes);
-    }
-    return supportedAttributes.contains<SVGAttributeHashTranslator>(attrName);
-}
-
 void SVGMPathElement::parseAttribute(const QualifiedName& name, const AtomicString& value)
 {
-    SVGParsingError parseError = NoError;
-
-    if (!isSupportedAttribute(name)) {
-        SVGElement::parseAttribute(name, value);
-    } else if (SVGURIReference::parseAttribute(name, value, parseError)) {
-    } else {
-        ASSERT_NOT_REACHED();
-    }
-
-    reportAttributeParsingError(parseError, name, value);
+    parseAttributeNew(name, value);
 }
 
 void SVGMPathElement::svgAttributeChanged(const QualifiedName& attrName)
 {
-    if (!isSupportedAttribute(attrName)) {
-        SVGElement::svgAttributeChanged(attrName);
-        return;
-    }
-
-    SVGElement::InvalidationGuard invalidationGuard(this);
-
     if (SVGURIReference::isKnownAttribute(attrName)) {
+        SVGElement::InvalidationGuard invalidationGuard(this);
         buildPendingResource();
         return;
     }
 
-    ASSERT_NOT_REACHED();
+    SVGElement::svgAttributeChanged(attrName);
 }
 
 SVGPathElement* SVGMPathElement::pathElement()