Remove some dead code in SVG "mixins"

third_party/WebKit/Source/core/svg/SVGTests.cpp

 /*
  * Copyright (C) 2004, 2005, 2008 Nikolas Zimmermann <zimmermann@kde.org>
  * Copyright (C) 2004, 2005, 2006, 2007 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 28 matching lines @@
     contextElement->addToPropertyMap(m_systemLanguage);
 }
 
 DEFINE_TRACE(SVGTests)
 {
     visitor->trace(m_requiredFeatures);
     visitor->trace(m_requiredExtensions);
     visitor->trace(m_systemLanguage);
 }
 
-bool SVGTests::isValid(Document& document) const
+bool SVGTests::isValid() const
 {
     // No need to check requiredFeatures since hasFeature always returns true.
 
     if (m_systemLanguage->isSpecified()) {
         bool matchFound = false;
 
         const Vector<String>& systemLanguage = m_systemLanguage->value()->values();
         for (const auto& value : systemLanguage) {
             if (value == defaultLanguage().string().substring(0, 2)) {
                 matchFound = true;
                 break;
             }
         }
 
         if (!matchFound)
             return false;
     }
 
     if (!m_requiredExtensions->value()->values().isEmpty())
         return false;
 
     return true;
 }
 
-bool SVGTests::parseAttribute(const QualifiedName& name, const AtomicString& value)
-{
-    // FIXME: Should handle exceptions here.
-    // This is safe as of now, as the current impl of SVGStringList::setValueAsString never fails.
-    SVGParsingError parseError = NoError;
-
-    if (name == SVGNames::requiredFeaturesAttr)
-        m_requiredFeatures->setBaseValueAsString(value, parseError);
-    else if (name == SVGNames::requiredExtensionsAttr)
-        m_requiredExtensions->setBaseValueAsString(value, parseError);
-    else if (name == SVGNames::systemLanguageAttr)
-        m_systemLanguage->setBaseValueAsString(value, parseError);
-    else
-        return false;
-
-    ASSERT(parseError == NoError);
-
-    return true;
-}
-
 bool SVGTests::isKnownAttribute(const QualifiedName& attrName)
 {
     return attrName == SVGNames::requiredFeaturesAttr
         || attrName == SVGNames::requiredExtensionsAttr
         || attrName == SVGNames::systemLanguageAttr;
 }
 
-void SVGTests::addSupportedAttributes(HashSet<QualifiedName>& supportedAttributes)
-{
-    supportedAttributes.add(SVGNames::requiredFeaturesAttr);
-    supportedAttributes.add(SVGNames::requiredExtensionsAttr);
-    supportedAttributes.add(SVGNames::systemLanguageAttr);
 }
-
-}