Remove some dead code in SVG "mixins"

third_party/WebKit/Source/core/svg/SVGFitToViewBox.h

 /*
  * Copyright (C) 2004, 2005, 2008 Nikolas Zimmermann <zimmermann@kde.org>
  * Copyright (C) 2004, 2005, 2006, 2007, 2010 Rob Buis <buis@kde.org>
  * Copyright (C) 2014 Samsung Electronics. 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.
  *
  * 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.
  */
 
 #ifndef SVGFitToViewBox_h
 #define SVGFitToViewBox_h
 
 #include "core/SVGNames.h"
-#include "core/dom/Document.h"
 #include "core/dom/QualifiedName.h"
 #include "core/svg/SVGAnimatedPreserveAspectRatio.h"
 #include "core/svg/SVGAnimatedRect.h"
-#include "core/svg/SVGDocumentExtensions.h"
-#include "core/svg/SVGParsingError.h"
 #include "core/svg/SVGPreserveAspectRatio.h"
 #include "core/svg/SVGRect.h"
 #include "platform/heap/Handle.h"
-#include "wtf/HashSet.h"
 
 namespace blink {
 
 class AffineTransform;
-class Document;
 
 class SVGFitToViewBox : public WillBeGarbageCollectedMixin {
 public:
     enum PropertyMapPolicy {
         PropertyMapPolicyAdd,
         PropertyMapPolicySkip,
     };
 
     static AffineTransform viewBoxToViewTransform(const FloatRect& viewBoxRect, PassRefPtrWillBeRawPtr<SVGPreserveAspectRatio>, float viewWidth, float viewHeight);
 
     static bool isKnownAttribute(const QualifiedName&);
-    static void addSupportedAttributes(HashSet<QualifiedName>&);
-
-    bool parseAttribute(const QualifiedName& name, const AtomicString& value, Document& document, SVGParsingError& parseError)
-    {
-        if (name == SVGNames::viewBoxAttr) {
-            m_viewBox->setBaseValueAsString(value, parseError);
-            return true;
-        }
-        if (name == SVGNames::preserveAspectRatioAttr) {
-            m_preserveAspectRatio->setBaseValueAsString(value, parseError);
-            return true;
-        }
-        return false;
-    }
 
     bool hasEmptyViewBox() const { return m_viewBox->currentValue()->isValid() && m_viewBox->currentValue()->value().isEmpty(); }
 
     // JS API
     SVGAnimatedRect* viewBox() const { return m_viewBox.get(); }
     SVGAnimatedPreserveAspectRatio* preserveAspectRatio() const { return m_preserveAspectRatio.get(); }
 
     DECLARE_VIRTUAL_TRACE();
 
 protected:
     explicit SVGFitToViewBox(SVGElement*, PropertyMapPolicy = PropertyMapPolicyAdd);
     void updateViewBox(const FloatRect&);
     void clearViewBox() { m_viewBox = nullptr; }
     void clearPreserveAspectRatio() { m_preserveAspectRatio = nullptr; }
 
 private:
     RefPtrWillBeMember<SVGAnimatedRect> m_viewBox;
     RefPtrWillBeMember<SVGAnimatedPreserveAspectRatio> m_preserveAspectRatio;
 };
 
 } // namespace blink
 
 #endif // SVGFitToViewBox_h