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

Source/core/svg/SVGScriptElement.cpp

Index: Source/core/svg/SVGScriptElement.cpp
diff --git a/Source/core/svg/SVGScriptElement.cpp b/Source/core/svg/SVGScriptElement.cpp
index 7099c20162db9cee840f2c67764eba2482361cfd..f27d91dcac1282a347be4e27589700148456a084 100644
--- a/Source/core/svg/SVGScriptElement.cpp
+++ b/Source/core/svg/SVGScriptElement.cpp
@@ -49,56 +49,22 @@ PassRefPtrWillBeRawPtr<SVGScriptElement> SVGScriptElement::create(Document& docu
     return adoptRefWillBeNoop(new SVGScriptElement(document, insertedByParser, false));
 }
 
-bool SVGScriptElement::isSupportedAttribute(const QualifiedName& attrName)
-{
-    DEFINE_STATIC_LOCAL(HashSet<QualifiedName>, supportedAttributes, ());
-    if (supportedAttributes.isEmpty()) {
-        SVGURIReference::addSupportedAttributes(supportedAttributes);
-        supportedAttributes.add(SVGNames::typeAttr);
-        supportedAttributes.add(HTMLNames::onerrorAttr);
-    }
-    return supportedAttributes.contains<SVGAttributeHashTranslator>(attrName);
-}
-
 void SVGScriptElement::parseAttribute(const QualifiedName& name, const AtomicString& value)
 {
-    if (!isSupportedAttribute(name)) {
-        SVGElement::parseAttribute(name, value);
-        return;
-    }
-
-    SVGParsingError parseError = NoError;
-    if (name == SVGNames::typeAttr)
-        return;
-
-    if (name == HTMLNames::onerrorAttr) {
+    if (name == HTMLNames::onerrorAttr)
         setAttributeEventListener(EventTypeNames::error, createAttributeEventListener(this, name, value, eventParameterName()));
-    } else if (SVGURIReference::parseAttribute(name, value, parseError)) {
-    } else {
-        ASSERT_NOT_REACHED();
-    }
-
-    reportAttributeParsingError(parseError, name, value);
+    else
+        parseAttributeNew(name, value);
 }
 
 void SVGScriptElement::svgAttributeChanged(const QualifiedName& attrName)
 {
-    if (!isSupportedAttribute(attrName)) {
-        SVGElement::svgAttributeChanged(attrName);
-        return;
-    }
-
-    SVGElement::InvalidationGuard invalidationGuard(this);
-
-    if (attrName == SVGNames::typeAttr || attrName == HTMLNames::onerrorAttr)
-        return;
-
     if (SVGURIReference::isKnownAttribute(attrName)) {
+        SVGElement::InvalidationGuard invalidationGuard(this);
         m_loader->handleSourceAttribute(hrefString());
-        return;
+    } else {
+        SVGElement::svgAttributeChanged(attrName);
     }
-
-    ASSERT_NOT_REACHED();
 }
 
 Node::InsertionNotificationRequest SVGScriptElement::insertedInto(ContainerNode* rootParent)