Remove isSupportedAttribute in svg

Source/core/svg/SVGComponentTransferFunctionElement.cpp

Index: Source/core/svg/SVGComponentTransferFunctionElement.cpp
diff --git a/Source/core/svg/SVGComponentTransferFunctionElement.cpp b/Source/core/svg/SVGComponentTransferFunctionElement.cpp
index 12df80176a413ab406f460501edf684fd553c140..973f852ada160d7ba89167a3341b4e476cd17a63 100644
--- a/Source/core/svg/SVGComponentTransferFunctionElement.cpp
+++ b/Source/core/svg/SVGComponentTransferFunctionElement.cpp
@@ -73,27 +73,9 @@ DEFINE_TRACE(SVGComponentTransferFunctionElement)
     SVGElement::trace(visitor);
 }
 
-bool SVGComponentTransferFunctionElement::isSupportedAttribute(const QualifiedName& attrName)
-{
-    DEFINE_STATIC_LOCAL(HashSet<QualifiedName>, supportedAttributes, ());
-    if (supportedAttributes.isEmpty()) {
-        supportedAttributes.add(SVGNames::typeAttr);
-        supportedAttributes.add(SVGNames::tableValuesAttr);
-        supportedAttributes.add(SVGNames::slopeAttr);
-        supportedAttributes.add(SVGNames::interceptAttr);
-        supportedAttributes.add(SVGNames::amplitudeAttr);
-        supportedAttributes.add(SVGNames::exponentAttr);
-        supportedAttributes.add(SVGNames::offsetAttr);
-    }
-    return supportedAttributes.contains<SVGAttributeHashTranslator>(attrName);
-}
-
 void SVGComponentTransferFunctionElement::svgAttributeChanged(const QualifiedName& attrName)
 {
-    if (!isSupportedAttribute(attrName)) {
-        SVGElement::svgAttributeChanged(attrName);
-        return;
-    }
+    SVGElement::svgAttributeChanged(attrName);
 
     SVGElement::InvalidationGuard invalidationGuard(this);