SVGLangSpace interface should be removed

Source/core/svg/SVGLangSpace.cpp

-/*
- * Copyright (C) 2004, 2005, 2007, 2008 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,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Library General Public License for more details.
- *
- * You should have received a copy of the GNU Library General Public License
- * along with this library; see the file COPYING.LIB.  If not, write to
- * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
- * Boston, MA 02110-1301, USA.
- */
-
-#include "config.h"
-#include "core/svg/SVGLangSpace.h"
-
-#include "XMLNames.h"
-#include "wtf/StdLibExtras.h"
-
-namespace WebCore {
-
-void SVGLangSpace::setXMLlang(const AtomicString& xmlLang)
-{
-    m_lang = xmlLang;
-}
-
-const AtomicString& SVGLangSpace::xmlspace() const
-{
-    if (!m_space) {
-        DEFINE_STATIC_LOCAL(const AtomicString, defaultString, ("default", AtomicString::ConstructFromLiteral));
-        return defaultString;
-    }
-
-    return m_space;
-}
-
-void SVGLangSpace::setXMLspace(const AtomicString& xmlSpace)
-{
-    m_space = xmlSpace;
-}
-
-bool SVGLangSpace::parseAttribute(const QualifiedName& name, const AtomicString& value)
-{
-    if (name.matches(XMLNames::langAttr)) {
-        setXMLlang(value);
-        return true;
-    }
-    if (name.matches(XMLNames::spaceAttr)) {
-        setXMLspace(value);
-        return true;
-    }
-
-    return false;
-}
-
-bool SVGLangSpace::isKnownAttribute(const QualifiedName& attrName)
-{
-    return attrName.matches(XMLNames::langAttr) || attrName.matches(XMLNames::spaceAttr);
-}
-
-void SVGLangSpace::addSupportedAttributes(HashSet<QualifiedName>& supportedAttributes)
-{
-    QualifiedName langWithPrefix = XMLNames::langAttr;
-    langWithPrefix.setPrefix(xmlAtom);
-    supportedAttributes.add(langWithPrefix);
-    supportedAttributes.add(XMLNames::langAttr);
-
-    QualifiedName spaceWithPrefix = XMLNames::spaceAttr;
-    spaceWithPrefix.setPrefix(xmlAtom);
-    supportedAttributes.add(spaceWithPrefix);
-    supportedAttributes.add(XMLNames::spaceAttr);
-}
-
-}