[Line Layout API] Convert some SVG code to line layout API or shim

third_party/WebKit/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 241 matching lines @@
         && textContentElement->textLengthIsSpecifiedByUser();
 }
 
 void SVGTextLayoutEngine::layoutCharactersInTextBoxes(InlineFlowBox* start)
 {
     bool textLengthSpacingInEffect = m_textLengthSpacingInEffect || definesTextLengthWithSpacing(start);
     TemporaryChange<bool> textLengthSpacingScope(m_textLengthSpacingInEffect, textLengthSpacingInEffect);
 
     for (InlineBox* child = start->firstChild(); child; child = child->nextOnLine()) {
         if (child->isSVGInlineTextBox()) {
-            ASSERT(child->layoutObject().isSVGInlineText());
+            ASSERT(child->lineLayoutItem().isSVGInlineText());
             layoutInlineTextBox(toSVGInlineTextBox(child));
         } else {
             // Skip generated content.
-            Node* node = child->layoutObject().node();
+            Node* node = child->lineLayoutItem().node();
             if (!node)
                 continue;
 
             SVGInlineFlowBox* flowBox = toSVGInlineFlowBox(child);
             bool isTextPath = isSVGTextPathElement(*node);
             if (isTextPath)
                 beginTextPathLayout(flowBox);
 
             layoutCharactersInTextBoxes(flowBox);
 
@@ skipping 275 matching lines @@
     }
 
     if (!didStartTextFragment)
         return;
 
     // Close last open fragment, if needed.
     recordTextFragment(textBox);
 }
 
 }