[SVG] SVGAnimatedRect migration to new SVG property impl.

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 63 matching lines @@
         LENGTHADJUST_UNKNOWN = SVGLengthAdjustUnknown,
         LENGTHADJUST_SPACING = SVGLengthAdjustSpacing,
         LENGTHADJUST_SPACINGANDGLYPHS = SVGLengthAdjustSpacingAndGlyphs
     };
 
     unsigned getNumberOfChars();
     float getComputedTextLength();
     float getSubStringLength(unsigned charnum, unsigned nchars, ExceptionState&);
     SVGPoint getStartPositionOfChar(unsigned charnum, ExceptionState&);
     SVGPoint getEndPositionOfChar(unsigned charnum, ExceptionState&);
-    SVGRect getExtentOfChar(unsigned charnum, ExceptionState&);
+    PassRefPtr<SVGRectTearOff> getExtentOfChar(unsigned charnum, ExceptionState&);
     float getRotationOfChar(unsigned charnum, ExceptionState&);
     int getCharNumAtPosition(const SVGPoint&);
     void selectSubString(unsigned charnum, unsigned nchars, ExceptionState&);
 
     static SVGTextContentElement* elementFromRenderer(RenderObject*);
 
     SVGAnimatedLength* textLength() { return m_textLength.get(); }
     bool textLengthIsSpecifiedByUser() { return m_textLengthIsSpecifiedByUser; }
 
 protected:
@@ skipping 22 matching lines @@
 inline bool isSVGTextContentElement(const Node& node)
 {
     return node.isSVGElement() && toSVGElement(node).isTextContent();
 }
 
 DEFINE_NODE_TYPE_CASTS_WITH_FUNCTION(SVGTextContentElement);
 
 } // namespace WebCore
 
 #endif