Rewrite to not store type in m_type and also remove type getter/setter.

Source/core/svg/SVGElement.h

 /*
  * Copyright (C) 2004, 2005, 2006, 2008 Nikolas Zimmermann <zimmermann@kde.org>
  * Copyright (C) 2004, 2005, 2006 Rob Buis <buis@kde.org>
  * Copyright (C) 2009 Apple Inc. 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.
  *
@@ skipping 115 matching lines @@
 
     static void synchronizeRequiredFeatures(SVGElement* contextElement);
     static void synchronizeRequiredExtensions(SVGElement* contextElement);
     static void synchronizeSystemLanguage(SVGElement* contextElement);
 
     virtual void synchronizeRequiredFeatures() { }
     virtual void synchronizeRequiredExtensions() { }
     virtual void synchronizeSystemLanguage() { }
 
 #ifndef NDEBUG
-    bool isAnimatableAttribute(const QualifiedName&) const;
+    virtual bool isAnimatableAttribute(const QualifiedName&) const;
 #endif
 
     MutableStylePropertySet* animatedSMILStyleProperties() const;
     MutableStylePropertySet* ensureAnimatedSMILStyleProperties();
     void setUseOverrideComputedStyle(bool);
 
     virtual bool haveLoadedRequiredResources();
 
     virtual bool addEventListener(const AtomicString& eventType, PassRefPtr<EventListener>, bool useCapture) OVERRIDE FINAL;
     virtual bool removeEventListener(const AtomicString& eventType, EventListener*, bool useCapture) OVERRIDE FINAL;
@@ skipping 109 matching lines @@
         return DefaultHash<QualifiedName>::Hash::hash(key);
     }
     static bool equal(const QualifiedName& a, const QualifiedName& b) { return a.matches(b); }
 };
 
 DEFINE_NODE_TYPE_CASTS(SVGElement, isSVGElement());
 
 }
 
 #endif