SVGLangSpace interface should be removed

Source/core/svg/SVGTextContentElement.cpp

 /*
  * Copyright (C) 2004, 2005, 2007, 2008 Nikolas Zimmermann <zimmermann@kde.org>
  * Copyright (C) 2004, 2005, 2006, 2007, 2008 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 195 matching lines @@
     for (unsigned i = 0; i < nchars; ++i)
         end = end.next();
 
     document().frame()->selection().setSelection(VisibleSelection(start, end));
 }
 
 bool SVGTextContentElement::isSupportedAttribute(const QualifiedName& attrName)
 {
     DEFINE_STATIC_LOCAL(HashSet<QualifiedName>, supportedAttributes, ());
     if (supportedAttributes.isEmpty()) {
-        SVGLangSpace::addSupportedAttributes(supportedAttributes);
         SVGExternalResourcesRequired::addSupportedAttributes(supportedAttributes);
         supportedAttributes.add(SVGNames::lengthAdjustAttr);
         supportedAttributes.add(SVGNames::textLengthAttr);
+        supportedAttributes.add(XMLNames::spaceAttr);
     }
     return supportedAttributes.contains<SVGAttributeHashTranslator>(attrName);
 }
 
 bool SVGTextContentElement::isPresentationAttribute(const QualifiedName& name) const
 {
     if (name.matches(XMLNames::spaceAttr))
         return true;
     return SVGGraphicsElement::isPresentationAttribute(name);
 }
@@ skipping 18 matching lines @@
 
     if (!isSupportedAttribute(name))
         SVGGraphicsElement::parseAttribute(name, value);
     else if (name == SVGNames::lengthAdjustAttr) {
         SVGLengthAdjustType propertyValue = SVGPropertyTraits<SVGLengthAdjustType>::fromString(value);
         if (propertyValue > 0)
             setLengthAdjustBaseValue(propertyValue);
     } else if (name == SVGNames::textLengthAttr) {
         m_textLength.value = SVGLength::construct(LengthModeOther, value, parseError, ForbidNegativeLengths);
     } else if (SVGExternalResourcesRequired::parseAttribute(name, value)) {
-    } else if (SVGLangSpace::parseAttribute(name, value)) {
+    } else if (name.matches(XMLNames::spaceAttr)) {
     } else
         ASSERT_NOT_REACHED();
 
     reportAttributeParsingError(parseError, name, value);
 }
 
 void SVGTextContentElement::svgAttributeChanged(const QualifiedName& attrName)
 {
     if (!isSupportedAttribute(attrName)) {
         SVGGraphicsElement::svgAttributeChanged(attrName);
@@ skipping 28 matching lines @@
     SVGElement* element = toSVGElement(renderer->node());
     ASSERT(element);
 
     if (!element->isTextContent())
         return 0;
 
     return toSVGTextContentElement(element);
 }
 
 }