Remove isSupportedAttribute in svg

Source/core/svg/SVGFEBlendElement.cpp

 /*
  * Copyright (C) 2004, 2005, 2007 Nikolas Zimmermann <zimmermann@kde.org>
  * Copyright (C) 2004, 2005, 2006 Rob Buis <buis@kde.org>
  *
  * 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,
@@ skipping 91 matching lines @@
 DEFINE_TRACE(SVGFEBlendElement)
 {
     visitor->trace(m_in1);
     visitor->trace(m_in2);
     visitor->trace(m_mode);
     SVGFilterPrimitiveStandardAttributes::trace(visitor);
 }
 
 DEFINE_NODE_FACTORY(SVGFEBlendElement)
 
-bool SVGFEBlendElement::isSupportedAttribute(const QualifiedName& attrName)
-{
-    DEFINE_STATIC_LOCAL(HashSet<QualifiedName>, supportedAttributes, ());
-    if (supportedAttributes.isEmpty()) {
-        supportedAttributes.add(SVGNames::modeAttr);
-        supportedAttributes.add(SVGNames::inAttr);
-        supportedAttributes.add(SVGNames::in2Attr);
-    }
-    return supportedAttributes.contains<SVGAttributeHashTranslator>(attrName);
-}
-
 bool SVGFEBlendElement::setFilterEffectAttribute(FilterEffect* effect, const QualifiedName& attrName)
 {
     FEBlend* blend = static_cast<FEBlend*>(effect);
     if (attrName == SVGNames::modeAttr)
         return blend->setBlendMode(toWebBlendMode(m_mode->currentValue()->enumValue()));
 
     ASSERT_NOT_REACHED();
     return false;
 }
 
 void SVGFEBlendElement::svgAttributeChanged(const QualifiedName& attrName)
 {
-    if (!isSupportedAttribute(attrName)) {
-        SVGFilterPrimitiveStandardAttributes::svgAttributeChanged(attrName);
-        return;
-    }
-
-    SVGElement::InvalidationGuard invalidationGuard(this);
-
     if (attrName == SVGNames::modeAttr) {
+        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> SVGFEBlendElement::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 = FEBlend::create(filter, toWebBlendMode(m_mode->currentValue()->enumValue()));
     FilterEffectVector& inputEffects = effect->inputEffects();
     inputEffects.reserveCapacity(2);
     inputEffects.append(input1);
     inputEffects.append(input2);
     return effect.release();
 }
 
 }