Consolidate Font::codePath kerning & ligatures exceptions

Source/platform/fonts/Font.h

 /*
  * Copyright (C) 2000 Lars Knoll (knoll@kde.org)
  *           (C) 2000 Antti Koivisto (koivisto@kde.org)
  *           (C) 2000 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2003, 2006, 2007, 2010, 2011 Apple Inc. All rights reserved.
  * Copyright (C) 2008 Holger Hans Peter Freyther
  *
  * 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
@@ skipping 113 matching lines @@
     const SimpleFontData* primaryFont() const;
     const FontData* fontDataAt(unsigned) const;
     inline GlyphData glyphDataForCharacter(UChar32& c, bool mirror, bool spaceNormalize = false, FontDataVariant variant = AutoVariant) const
     {
         return glyphDataAndPageForCharacter(c, mirror, spaceNormalize, variant).first;
     }
 
     std::pair<GlyphData, GlyphPage*> glyphDataAndPageForCharacter(UChar32&, bool mirror, bool normalizeSpace = false, FontDataVariant = AutoVariant) const;
     bool primaryFontHasGlyphForCharacter(UChar32) const;
 
-    CodePath codePath(const TextRun&) const;
+    CodePath codePath(const TextRun& run) const { return codePath(run, 0, run.length()); }
+    CodePath codePath(const TextRun&, int from, int to) const;
 
     PassTextBlobPtr buildTextBlob(const TextRunPaintInfo&, const FloatPoint& textOrigin, bool couldUseLCDRenderedText, CustomFontNotReadyAction = DoNotPaintIfFontNotReady) const;
     void drawTextBlob(GraphicsContext*, const SkTextBlob*, const SkPoint& origin) const;
 
 private:
     enum ForTextEmphasisOrNot { NotForTextEmphasis, ForTextEmphasis };
 
     // Returns the initial in-stream advance.
     float getGlyphsAndAdvancesForSimpleText(const TextRunPaintInfo&, GlyphBuffer&, ForTextEmphasisOrNot = NotForTextEmphasis) const;
     float drawSimpleText(GraphicsContext*, const TextRunPaintInfo&, const FloatPoint&) const;
@@ skipping 17 matching lines @@
 
     PassTextBlobPtr buildTextBlobForSimpleText(const TextRunPaintInfo&, const FloatPoint& textOrigin, bool couldUseLCDRenderedText) const;
     PassTextBlobPtr buildTextBlob(const GlyphBuffer&, float initialAdvance, const FloatRect& bounds, float& advance, bool couldUseLCD) const;
 
     friend struct SimpleShaper;
     friend class SVGTextRunRenderingContext;
 
 public:
     // Useful for debugging the different font rendering code paths.
     static void setCodePath(CodePath);
-    static CodePath codePath();
     static CodePath s_codePath;
 
     FontSelector* fontSelector() const;
 
     FontFallbackList* fontList() const { return m_fontFallbackList.get(); }
 
     void willUseFontData(UChar32) const;
 
     static FloatRect pixelSnappedSelectionRect(float fromX, float toX, float y, float height);
 private:
@@ skipping 42 matching lines @@
 {
     if (!tabSize)
         return fontDescription().letterSpacing();
     float tabWidth = tabSize * fontData.spaceWidth() + fontDescription().letterSpacing();
     return tabWidth - fmodf(position, tabWidth);
 }
 
 } // namespace blink
 
 #endif