Simplify SVGAnimat\w+Element::parseAttribute

Source/core/svg/SVGAnimateMotionElement.cpp

 /*
  * Copyright (C) 2007 Eric Seidel <eric@webkit.org>
  * Copyright (C) 2007 Rob Buis <buis@kde.org>
  * Copyright (C) 2008 Apple Inc. All rights reserved.
  *
  * 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.
  *
@@ skipping 73 matching lines @@
         || isSVGForeignObjectElement(*targetElement)
         );
 }
 
 bool SVGAnimateMotionElement::hasValidAttributeName()
 {
     // AnimateMotion does not use attributeName so it is always valid.
     return true;
 }
 
-bool SVGAnimateMotionElement::isSupportedAttribute(const QualifiedName& attrName)
-{
-    DEFINE_STATIC_LOCAL(HashSet<QualifiedName>, supportedAttributes, ());
-    if (supportedAttributes.isEmpty())
-        supportedAttributes.add(SVGNames::pathAttr);
-    return supportedAttributes.contains<SVGAttributeHashTranslator>(attrName);
-}
-
 void SVGAnimateMotionElement::parseAttribute(const QualifiedName& name, const AtomicString& value)
 {
-    if (!isSupportedAttribute(name)) {
-        SVGAnimationElement::parseAttribute(name, value);
-        return;
-    }
-
     if (name == SVGNames::pathAttr) {
         m_path = Path();
         buildPathFromString(value, m_path);
         updateAnimationPath();
         return;
     }
 
-    ASSERT_NOT_REACHED();
+    SVGAnimationElement::parseAttribute(name, value);
 }
 
 SVGAnimateMotionElement::RotateMode SVGAnimateMotionElement::rotateMode() const
 {
     DEFINE_STATIC_LOCAL(const AtomicString, autoVal, ("auto", AtomicString::ConstructFromLiteral));
     DEFINE_STATIC_LOCAL(const AtomicString, autoReverse, ("auto-reverse", AtomicString::ConstructFromLiteral));
     const AtomicString& rotate = getAttribute(SVGNames::rotateAttr);
     if (rotate == autoVal)
         return RotateAuto;
     if (rotate == autoReverse)
@@ skipping 207 matching lines @@
 
 void SVGAnimateMotionElement::updateAnimationMode()
 {
     if (!m_animationPath.isEmpty())
         setAnimationMode(PathAnimation);
     else
         SVGAnimationElement::updateAnimationMode();
 }
 
 }