Move isValid implementations into SVGGraphicsElement

Source/core/svg/SVGTextContentElement.h

 /*
  * Copyright (C) 2004, 2005, 2008 Nikolas Zimmermann <zimmermann@kde.org>
  * Copyright (C) 2004, 2005, 2006, 2008 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 76 matching lines @@
     void selectSubString(unsigned charnum, unsigned nchars, ExceptionState&);
 
     static SVGTextContentElement* elementFromRenderer(RenderObject*);
 
     SVGAnimatedLength* textLength() { return m_textLength.get(); }
     bool textLengthIsSpecifiedByUser() { return m_textLengthIsSpecifiedByUser; }
 
 protected:
     SVGTextContentElement(const QualifiedName&, Document&);
 
-    virtual bool isValid() const OVERRIDE FINAL { return SVGTests::isValid(); }
-
     bool isSupportedAttribute(const QualifiedName&);
     virtual void parseAttribute(const QualifiedName&, const AtomicString&) OVERRIDE;
     virtual bool isPresentationAttribute(const QualifiedName&) const OVERRIDE FINAL;
     virtual void collectStyleForPresentationAttribute(const QualifiedName&, const AtomicString&, MutableStylePropertySet*) OVERRIDE FINAL;
     virtual void svgAttributeChanged(const QualifiedName&) OVERRIDE;
 
     virtual bool selfHasRelativeLengths() const OVERRIDE;
 
 private:
     virtual bool isTextContent() const OVERRIDE FINAL { return true; }
 
     RefPtr<SVGAnimatedLength> m_textLength;
     bool m_textLengthIsSpecifiedByUser;
     BEGIN_DECLARE_ANIMATED_PROPERTIES(SVGTextContentElement)
         DECLARE_ANIMATED_ENUMERATION(LengthAdjust, lengthAdjust, SVGLengthAdjustType)
     END_DECLARE_ANIMATED_PROPERTIES
 };
 
 inline bool isSVGTextContentElement(const Node& node)
 {
     return node.isSVGElement() && toSVGElement(node).isTextContent();
 }
 
 DEFINE_NODE_TYPE_CASTS_WITH_FUNCTION(SVGTextContentElement);
 
 } // namespace WebCore
 
 #endif