[SVG] SVGLength{,List} migration to new SVG property impl.

Source/core/rendering/svg/SVGTextLayoutEngineBaseline.cpp

 /*
  * Copyright (C) Research In Motion Limited 2010. 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
@@ skipping 20 matching lines @@
 namespace WebCore {
 
 SVGTextLayoutEngineBaseline::SVGTextLayoutEngineBaseline(const Font& font)
     : m_font(font)
 {
 }
 
 float SVGTextLayoutEngineBaseline::calculateBaselineShift(const SVGRenderStyle* style, SVGElement* contextElement) const
 {
     if (style->baselineShift() == BS_LENGTH) {
-        SVGLength baselineShiftValueLength = style->baselineShiftValue();
-        if (baselineShiftValueLength.unitType() == LengthTypePercentage)
-            return baselineShiftValueLength.valueAsPercentage() * m_font.pixelSize();
+        RefPtr<SVGLength> baselineShiftValueLength = style->baselineShiftValue();
+        if (baselineShiftValueLength->unitType() == LengthTypePercentage)
+            return baselineShiftValueLength->valueAsPercentage() * m_font.pixelSize();
 
         SVGLengthContext lengthContext(contextElement);
-        return baselineShiftValueLength.value(lengthContext);
+        return baselineShiftValueLength->value(lengthContext);
     }
 
     switch (style->baselineShift()) {
     case BS_BASELINE:
         return 0;
     case BS_SUB:
         return -m_font.fontMetrics().floatHeight() / 2;
     case BS_SUPER:
         return m_font.fontMetrics().floatHeight() / 2;
     default:
@@ skipping 170 matching lines @@
         xOrientationShift = metrics.width();
 
     // Horizontal advance calculation.
     if (angle && !orientationIsMultiplyOf180Degrees)
         return metrics.height();
 
     return metrics.width();
 }
 
 }