Remove isSupportedAttribute in svg

Source/core/svg/SVGFEDisplacementMapElement.cpp

 /*
  * Copyright (C) 2006 Oliver Hunt <oliver@nerget.com>
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  *
  * This library is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ skipping 48 matching lines @@
     visitor->trace(m_scale);
     visitor->trace(m_in1);
     visitor->trace(m_in2);
     visitor->trace(m_xChannelSelector);
     visitor->trace(m_yChannelSelector);
     SVGFilterPrimitiveStandardAttributes::trace(visitor);
 }
 
 DEFINE_NODE_FACTORY(SVGFEDisplacementMapElement)
 
-bool SVGFEDisplacementMapElement::isSupportedAttribute(const QualifiedName& attrName)
-{
-    DEFINE_STATIC_LOCAL(HashSet<QualifiedName>, supportedAttributes, ());
-    if (supportedAttributes.isEmpty()) {
-        supportedAttributes.add(SVGNames::inAttr);
-        supportedAttributes.add(SVGNames::in2Attr);
-        supportedAttributes.add(SVGNames::xChannelSelectorAttr);
-        supportedAttributes.add(SVGNames::yChannelSelectorAttr);
-        supportedAttributes.add(SVGNames::scaleAttr);
-    }
-    return supportedAttributes.contains<SVGAttributeHashTranslator>(attrName);
-}
-
 bool SVGFEDisplacementMapElement::setFilterEffectAttribute(FilterEffect* effect, const QualifiedName& attrName)
 {
     FEDisplacementMap* displacementMap = static_cast<FEDisplacementMap*>(effect);
     if (attrName == SVGNames::xChannelSelectorAttr)
         return displacementMap->setXChannelSelector(m_xChannelSelector->currentValue()->enumValue());
     if (attrName == SVGNames::yChannelSelectorAttr)
         return displacementMap->setYChannelSelector(m_yChannelSelector->currentValue()->enumValue());
     if (attrName == SVGNames::scaleAttr)
         return displacementMap->setScale(m_scale->currentValue()->value());
 
     ASSERT_NOT_REACHED();
     return false;
 }
 
 void SVGFEDisplacementMapElement::svgAttributeChanged(const QualifiedName& attrName)
 {
-    if (!isSupportedAttribute(attrName)) {
-        SVGFilterPrimitiveStandardAttributes::svgAttributeChanged(attrName);
-        return;
-    }
-
-    SVGElement::InvalidationGuard invalidationGuard(this);
-
     if (attrName == SVGNames::xChannelSelectorAttr || attrName == SVGNames::yChannelSelectorAttr || attrName == SVGNames::scaleAttr) {
+        SVGElement::InvalidationGuard invalidationGuard(this);
         primitiveAttributeChanged(attrName);
         return;
     }
 
     if (attrName == SVGNames::inAttr || attrName == SVGNames::in2Attr) {
+        SVGElement::InvalidationGuard invalidationGuard(this);
         invalidate();
         return;
     }
 
-    ASSERT_NOT_REACHED();
+    SVGFilterPrimitiveStandardAttributes::svgAttributeChanged(attrName);
 }
 
 PassRefPtrWillBeRawPtr<FilterEffect> SVGFEDisplacementMapElement::build(SVGFilterBuilder* filterBuilder, Filter* filter)
 {
     FilterEffect* input1 = filterBuilder->getEffectById(AtomicString(m_in1->currentValue()->value()));
     FilterEffect* input2 = filterBuilder->getEffectById(AtomicString(m_in2->currentValue()->value()));
 
     if (!input1 || !input2)
         return nullptr;
 
     RefPtrWillBeRawPtr<FilterEffect> effect = FEDisplacementMap::create(filter, m_xChannelSelector->currentValue()->enumValue(), m_yChannelSelector->currentValue()->enumValue(), m_scale->currentValue()->value());
     FilterEffectVector& inputEffects = effect->inputEffects();
     inputEffects.reserveCapacity(2);
     inputEffects.append(input1);
     inputEffects.append(input2);
     return effect.release();
 }
 
 } // namespace blink