Offset-only GlyphBuffer

Source/platform/fonts/shaping/SimpleShaper.h

 /*
  * Copyright (C) 2003, 2006, 2008, 2011 Apple Inc. All rights reserved.
  * Copyright (C) 2008 Holger Hans Peter Freyther
  * Copyright (C) 2014 Google 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 64 matching lines @@
 
     struct CharacterData {
         UChar32 character;
         unsigned clusterLength;
         int characterOffset;
     };
 
     GlyphData glyphDataForCharacter(CharacterData&, bool normalizeSpace = false);
     float characterWidth(UChar32, const GlyphData&) const;
     void cacheFallbackFont(const SimpleFontData*, const SimpleFontData* primaryFont);
-    float adjustSpacing(float, const CharacterData&, const SimpleFontData&, GlyphBuffer*);
+    float adjustSpacing(float, const CharacterData&);
     void updateGlyphBounds(const GlyphData&, float width, bool firstCharacter);
 
     template <typename TextIterator>
     unsigned advanceInternal(TextIterator&, GlyphBuffer*);
 
     HashSet<const SimpleFontData*>* m_fallbackFonts;
     GlyphBounds* m_bounds;
     bool m_forTextEmphasis : 1;
 };
 
 } // namespace blink
 
 #endif