Simplify text emphasis painting

Source/platform/fonts/shaping/HarfBuzzShaper.h

 /*
  * Copyright (C) 2012 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 34 matching lines @@
 #include <unicode/uscript.h>
 
 namespace blink {
 
 class Font;
 class GlyphBuffer;
 class SimpleFontData;
 
 class HarfBuzzShaper final : public Shaper {
 public:
-    HarfBuzzShaper(const Font*, const TextRun&, ForTextEmphasisOrNot = NotForTextEmphasis, HashSet<const SimpleFontData*>* fallbackFonts = 0, FloatRect* = 0);
+    HarfBuzzShaper(const Font*, const TextRun&, const GlyphData* emphasisData = nullptr,
+        HashSet<const SimpleFontData*>* fallbackFonts = nullptr, FloatRect* = nullptr);
 
     void setDrawRange(int from, int to);
     bool shape(GlyphBuffer* = 0);
     float totalWidth() { return m_totalWidth; }
     int offsetForPosition(float targetX);
     FloatRect selectionRect(const FloatPoint&, int height, int from, int to);
 
 private:
     class HarfBuzzRun {
     public:
@@ skipping 78 matching lines @@
     int m_toIndex;
 
     float m_totalWidth;
 
     friend struct CachedShapingResults;
 };
 
 } // namespace blink
 
 #endif // HarfBuzzShaper_h