SVGLangSpace interface should be removed

Source/core/svg/SVGLineElement.cpp

 /*
  * Copyright (C) 2004, 2005, 2006, 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 46 matching lines @@
 
 PassRefPtr<SVGLineElement> SVGLineElement::create(Document& document)
 {
     return adoptRef(new SVGLineElement(document));
 }
 
 bool SVGLineElement::isSupportedAttribute(const QualifiedName& attrName)
 {
     DEFINE_STATIC_LOCAL(HashSet<QualifiedName>, supportedAttributes, ());
     if (supportedAttributes.isEmpty()) {
-        SVGLangSpace::addSupportedAttributes(supportedAttributes);
         SVGExternalResourcesRequired::addSupportedAttributes(supportedAttributes);
         supportedAttributes.add(SVGNames::x1Attr);
         supportedAttributes.add(SVGNames::x2Attr);
         supportedAttributes.add(SVGNames::y1Attr);
         supportedAttributes.add(SVGNames::y2Attr);
     }
     return supportedAttributes.contains<SVGAttributeHashTranslator>(attrName);
 }
 
 void SVGLineElement::parseAttribute(const QualifiedName& name, const AtomicString& value)
 {
     SVGParsingError parseError = NoError;
 
     if (!isSupportedAttribute(name))
         SVGGeometryElement::parseAttribute(name, value);
     else if (name == SVGNames::x1Attr)
         setX1BaseValue(SVGLength::construct(LengthModeWidth, value, parseError));
     else if (name == SVGNames::y1Attr)
         setY1BaseValue(SVGLength::construct(LengthModeHeight, value, parseError));
     else if (name == SVGNames::x2Attr)
         setX2BaseValue(SVGLength::construct(LengthModeWidth, value, parseError));
     else if (name == SVGNames::y2Attr)
         setY2BaseValue(SVGLength::construct(LengthModeHeight, value, parseError));
-    else if (SVGLangSpace::parseAttribute(name, value)
-             || SVGExternalResourcesRequired::parseAttribute(name, value)) {
+    else if (SVGExternalResourcesRequired::parseAttribute(name, value)) {
     } else
         ASSERT_NOT_REACHED();
 
     reportAttributeParsingError(parseError, name, value);
 }
 
 void SVGLineElement::svgAttributeChanged(const QualifiedName& attrName)
 {
     if (!isSupportedAttribute(attrName)) {
         SVGGeometryElement::svgAttributeChanged(attrName);
@@ skipping 13 matching lines @@
     RenderSVGShape* renderer = toRenderSVGShape(this->renderer());
     if (!renderer)
         return;
 
     if (isLengthAttribute) {
         renderer->setNeedsShapeUpdate();
         RenderSVGResource::markForLayoutAndParentResourceInvalidation(renderer);
         return;
     }
 
-    if (SVGLangSpace::isKnownAttribute(attrName) || SVGExternalResourcesRequired::isKnownAttribute(attrName)) {
+    if (SVGExternalResourcesRequired::isKnownAttribute(attrName)) {
         RenderSVGResource::markForLayoutAndParentResourceInvalidation(renderer);
         return;
     }
 
     ASSERT_NOT_REACHED();
 }
 
 bool SVGLineElement::selfHasRelativeLengths() const
 {
     return x1CurrentValue().isRelative()
         || y1CurrentValue().isRelative()
         || x2CurrentValue().isRelative()
         || y2CurrentValue().isRelative();
 }
 
 }