Adjust both x and y position when drawing glyphs

Source/platform/fonts/GlyphBuffer.h

 /*
  * Copyright (C) 2006, 2009, 2011 Apple Inc. All rights reserved.
  * Copyright (C) 2007-2008 Torch Mobile Inc.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
@@ skipping 68 matching lines @@
     const GlyphBufferGlyph* glyphs(unsigned from) const { return m_glyphs.data() + from; }
     const GlyphBufferAdvance* advances(unsigned from) const { return m_advances.data() + from; }
 
     const SimpleFontData* fontDataAt(unsigned index) const { return m_fontData[index]; }
 
     Glyph glyphAt(unsigned index) const
     {
         return m_glyphs[index];
     }
 
-    float advanceAt(unsigned index) const
+    FloatSize advanceAt(unsigned index) const
     {
-        return m_advances[index].width();
+#if OS(MACOSX)
+    return FloatSize(m_advances[index]);
+#else
+    return m_advances[index];
+#endif
     }
 
     void add(Glyph glyph, const SimpleFontData* font, float width)
     {
         m_fontData.append(font);
         m_glyphs.append(glyph);
 
 #if OS(MACOSX)
         CGSize advance = { width, 0 };
         m_advances.append(advance);
@@ skipping 38 matching lines @@
         m_advances[index2] = s;
     }
 
     Vector<const SimpleFontData*, 2048> m_fontData;
     Vector<GlyphBufferGlyph, 2048> m_glyphs;
     Vector<GlyphBufferAdvance, 2048> m_advances;
 };
 
 }
 #endif