Avoiding multiple text/string parsing while creating TextRun

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 1503 matching lines @@
         charactersWithHyphen->append(string);
         charactersWithHyphen->append(hyphenString);
         string = charactersWithHyphen->toString().createView();
         maximumLength = string.length();
     }
 
     ASSERT(maximumLength >= static_cast<int>(string.length()));
 
     TextRun run(string, textPos(), expansion(), expansionBehavior(), direction(), dirOverride() || style->rtlOrdering() == VisualOrder, !textRenderer->canUseSimpleFontCodePath());
     run.setTabSize(!style->collapseWhiteSpace(), style->tabSize());
+    run.setCharacterScanForCodePath(!textRenderer->canUseSimpleFontCodePath());
     run.setDistributeJustification(style->textJustify() == TextJustifyDistribute);
     if (textRunNeedsRenderingContext(font))
         run.setRenderingContext(SVGTextRunRenderingContext::create(textRenderer));
 
     // Propagate the maximum length of the characters buffer to the TextRun, even when we're only processing a substring.
     run.setCharactersLength(maximumLength);
     ASSERT(run.charactersLength() >= run.length());
     return run;
 }
 
@@ skipping 22 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 WebCore