Use Length for baselineShiftValue in SVGLayoutStyle

Source/core/layout/svg/SVGTextLayoutEngine.cpp

 /*
  * Copyright (C) Research In Motion Limited 2010-2012. 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 409 matching lines @@
 {
     ++m_visualMetricsListOffset;
     m_visualCharacterOffset += visualMetrics.length();
 }
 
 void SVGTextLayoutEngine::layoutTextOnLineOrPath(SVGInlineTextBox* textBox, const LayoutSVGInlineText& text, const LayoutStyle& style)
 {
     if (m_inPathLayout && !m_textPathCalculator)
         return;
 
-    SVGElement* lengthContext = toSVGElement(text.parent()->node());
-
     LayoutObject* textParent = text.parent();
     bool definesTextLength = textParent ? parentDefinesTextLength(textParent) : false;
 
     const SVGLayoutStyle& svgStyle = style.svgStyle();
 
     m_visualMetricsListOffset = 0;
     m_visualCharacterOffset = 0;
 
     const Vector<SVGTextMetrics>& visualMetricsValues = text.layoutAttributes()->textMetricsValues();
     ASSERT(!visualMetricsValues.isEmpty());
 
     const Font& font = style.font();
 
     SVGTextLayoutEngineSpacing spacingLayout(font, style.effectiveZoom());
     SVGTextLayoutEngineBaseline baselineLayout(font);
 
     bool didStartTextFragment = false;
     bool applySpacingToNextCharacter = false;
 
     float lastAngle = 0;
-    float baselineShift = baselineLayout.calculateBaselineShift(svgStyle, lengthContext);
+    float baselineShift = baselineLayout.calculateBaselineShift(style);
     baselineShift -= baselineLayout.calculateAlignmentBaselineShift(m_isVerticalText, &text);
 
     // Main layout algorithm.
     while (true) {
         // Find the start of the current text box in this list, respecting ligatures.
         SVGTextMetrics visualMetrics(SVGTextMetrics::SkippedSpaceMetrics);
         if (!currentVisualCharacterMetrics(textBox, visualMetricsValues, visualMetrics))
             break;
 
         if (visualMetrics.isEmpty()) {
@@ skipping 173 matching lines @@
     }
 
     if (!didStartTextFragment)
         return;
 
     // Close last open fragment, if needed.
     recordTextFragment(textBox, visualMetricsValues);
 }
 
 }