Revert of Convert remaining RenderSVG* nodes to RenderObject::isChildAllowed

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 134 matching lines @@
     virtual bool addEventListener(const AtomicString& eventType, PassRefPtr<EventListener>, bool useCapture) OVERRIDE FINAL;
     virtual bool removeEventListener(const AtomicString& eventType, EventListener*, bool useCapture) OVERRIDE FINAL;
 
     void invalidateRelativeLengthClients(SubtreeLayoutScope* = 0);
 
     bool isContextElement() const { return m_isContextElement; }
     void setContextElement() { m_isContextElement = true; }
 
     void addToPropertyMap(PassRefPtr<NewSVGAnimatedPropertyBase>);
 
-    virtual bool childShouldCreateRenderer(const Node& child) const { return true; }
+    virtual bool childShouldCreateRenderer(const Node& child) const;
 
     SVGAnimatedString* className() { return m_className.get(); }
 
 protected:
     SVGElement(const QualifiedName&, Document&, ConstructionType = CreateSVGElement);
 
     virtual void parseAttribute(const QualifiedName&, const AtomicString&) OVERRIDE;
 
     virtual void finishParsingChildren() OVERRIDE;
     virtual void attributeChanged(const QualifiedName&, const AtomicString&, AttributeModificationReason = ModifiedDirectly) OVERRIDE;
@@ skipping 90 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