Don't populate GlyphBuffer in InlineTextBox::characterWidths

Source/core/rendering/InlineTextBox.cpp

 /*
  * (C) 1999 Lars Knoll (knoll@kde.org)
  * (C) 2000 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. 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.
  *
@@ skipping 1219 matching lines @@
 
 void InlineTextBox::characterWidths(Vector<float>& widths) const
 {
     FontCachePurgePreventer fontCachePurgePreventer;
 
     RenderStyle* styleToUse = renderer().style(isFirstLineStyle());
     const Font& font = styleToUse->font();
 
     TextRun textRun = constructTextRun(styleToUse, font);
 
-    GlyphBuffer glyphBuffer;
     SimpleShaper shaper(&font, textRun);
     float lastWidth = 0;
     widths.resize(m_len);
     for (unsigned i = 0; i < m_len; i++) {
-        shaper.advance(i + 1, &glyphBuffer);
+        shaper.advance(i + 1);
         widths[i] = shaper.m_runWidthSoFar - lastWidth;
         lastWidth = shaper.m_runWidthSoFar;
     }
 }
 
 TextRun InlineTextBox::constructTextRun(RenderStyle* style, const Font& font, StringBuilder* charactersWithHyphen) const
 {
     ASSERT(style);
     ASSERT(renderer().text());
 
@@ skipping 59 matching lines @@
     printedCharacters = fprintf(stderr, "\t%s %p", obj.renderName(), &obj);
     const int rendererCharacterOffset = 24;
     for (; printedCharacters < rendererCharacterOffset; printedCharacters++)
         fputc(' ', stderr);
     fprintf(stderr, "(%d,%d) \"%s\"\n", start(), start() + len(), value.utf8().data());
 }
 
 #endif
 
 } // namespace blink