Fixing superscript and subscript baseline for tiny fonts in SVG

third_party/WebKit/Source/platform/fonts/SimpleFontData.h

 /*
  * This file is part of the internal font implementation.
  *
  * Copyright (C) 2006, 2008, 2010 Apple Inc. All rights reserved.
  * Copyright (C) 2007-2008 Torch Mobile, Inc.
  *
  * 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 82 matching lines @@
       case AutoVariant:
       case NormalVariant:
         break;
     }
     ASSERT_NOT_REACHED();
     return const_cast<SimpleFontData*>(this);
   }
 
   PassRefPtr<SimpleFontData> verticalRightOrientationFontData() const;
   PassRefPtr<SimpleFontData> uprightOrientationFontData() const;
+  PassRefPtr<SimpleFontData> subpixelAscentDescentFontData() const;
 
   bool hasVerticalGlyphs() const { return m_hasVerticalGlyphs; }
   bool isTextOrientationFallback() const { return m_isTextOrientationFallback; }
   bool isTextOrientationFallbackOf(const SimpleFontData*) const;
 
   FontMetrics& getFontMetrics() { return m_fontMetrics; }
   const FontMetrics& getFontMetrics() const { return m_fontMetrics; }
   float sizePerUnit() const {
     return platformData().size() /
            (getFontMetrics().unitsPerEm() ? getFontMetrics().unitsPerEm() : 1);
@@ skipping 141 matching lines @@
 
   m_glyphToWidthMap.setMetricsForGlyph(glyph, width);
   return width;
 #endif
 }
 
 DEFINE_FONT_DATA_TYPE_CASTS(SimpleFontData, false);
 
 }  // namespace blink
 #endif  // SimpleFontData_h