Moving string normalization out of HarfBuzz

third_party/WebKit/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 113 matching lines @@
 //
 // Now this sub run is successfully processed and can be appended to
 // ShapeResult. A new ShapeResult::RunInfo is created. The logic in
 // insertRunIntoShapeResult then takes care of merging the shape result into
 // the right position the vector of RunInfos in ShapeResult.
 //
 // Shaping then continues analogously for the remaining Hiragana Japanese
 // sub-run, and the result is inserted into ShapeResult as well.
 class PLATFORM_EXPORT HarfBuzzShaper final {
  public:
-  HarfBuzzShaper(const TextRun&);
+  HarfBuzzShaper(const UChar*, unsigned length, TextDirection);
   PassRefPtr<ShapeResult> shapeResult(const Font*) const;
   ~HarfBuzzShaper() {}
 
   enum HolesQueueItemAction { HolesQueueNextFont, HolesQueueRange };
 
   struct HolesQueueItem {
     DISALLOW_NEW_EXCEPT_PLACEMENT_NEW();
     HolesQueueItemAction m_action;
     unsigned m_startIndex;
     unsigned m_numCharacters;
@@ skipping 14 matching lines @@
   bool collectFallbackHintChars(const Deque<HolesQueueItem>&,
                                 Vector<UChar32>& hint) const;
 
   void insertRunIntoShapeResult(
       ShapeResult*,
       std::unique_ptr<ShapeResult::RunInfo> runToInsert,
       unsigned startGlyph,
       unsigned numGlyphs,
       hb_buffer_t*);
 
-  const TextRun& m_textRun;
-  std::unique_ptr<UChar[]> m_normalizedBuffer;
+  const UChar* m_normalizedBuffer;
   unsigned m_normalizedBufferLength;
+  TextDirection m_textDirection;
 };
 
 }  // namespace blink
 
 #endif  // HarfBuzzShaper_h