Make InlineBox::renderer() and related subclass methods return reference.

Source/core/rendering/svg/SVGTextChunkBuilder.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 73 matching lines @@
         processTextChunk(m_textChunks[i]);
 
     m_textChunks.clear();
 }
 
 void SVGTextChunkBuilder::addTextChunk(Vector<SVGInlineTextBox*>& lineLayoutBoxes, unsigned boxStart, unsigned boxCount)
 {
     SVGInlineTextBox* textBox = lineLayoutBoxes[boxStart];
     ASSERT(textBox);
 
-    RenderSVGInlineText* textRenderer = toRenderSVGInlineText(textBox->textRenderer());
-    ASSERT(textRenderer);
+    RenderSVGInlineText& textRenderer = toRenderSVGInlineText(textBox->textRenderer());
 
-    const RenderStyle* style = textRenderer->style();
+    const RenderStyle* style = toRenderSVGInlineText(textBox->textRenderer()).style();
     ASSERT(style);
 
     const SVGRenderStyle* svgStyle = style->svgStyle();
     ASSERT(svgStyle);
 
     // Build chunk style flags.
     unsigned chunkStyle = SVGTextChunk::DefaultStyle;
 
     // Handle 'direction' property.
     if (!style->isLeftToRightDirection())
@@ skipping 10 matching lines @@
     case TA_MIDDLE:
         chunkStyle |= SVGTextChunk::MiddleAnchor;
         break;
     case TA_END:
         chunkStyle |= SVGTextChunk::EndAnchor;
         break;
     };
 
     // Handle 'lengthAdjust' property.
     float desiredTextLength = 0;
-    if (SVGTextContentElement* textContentElement = SVGTextContentElement::elementFromRenderer(textRenderer->parent())) {
+    if (SVGTextContentElement* textContentElement = SVGTextContentElement::elementFromRenderer(textRenderer.parent())) {
         SVGLengthContext lengthContext(textContentElement);
         if (textContentElement->textLengthIsSpecifiedByUser())
             desiredTextLength = textContentElement->textLength()->currentValue()->value(lengthContext);
         else
             desiredTextLength = 0;
 
         switch (textContentElement->lengthAdjust()->currentValue()->enumValue()) {
         case SVGLengthAdjustUnknown:
             break;
         case SVGLengthAdjustSpacing:
@@ skipping 117 matching lines @@
 
     if (isVerticalText)
         spacingAndGlyphsTransform.scaleNonUniform(1, scale);
     else
         spacingAndGlyphsTransform.scaleNonUniform(scale, 1);
 
     spacingAndGlyphsTransform.translate(-fragment.x, -fragment.y);
 }
 
 }