Replace bare ICU run iterator with base::i18n::BiDiLineIterator

ui/gfx/render_text_harfbuzz.h

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef UI_GFX_RENDER_TEXT_HARFBUZZ_H_
 #define UI_GFX_RENDER_TEXT_HARFBUZZ_H_
 
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/scoped_vector.h"
 #include "third_party/harfbuzz-ng/src/hb.h"
@@ skipping 21 matching lines @@
   // Returns whether the given shaped run contains any missing glyphs.
   bool HasMissingGlyphs() const;
 
   // Returns the X coordinate of the leading or |trailing| edge of the glyph
   // starting at |text_index|, relative to the left of the text (not the view).
   int GetGlyphXBoundary(size_t text_index, bool trailing) const;
 
   int width;
   int preceding_run_widths;
   Range range;
-  UBiDiDirection direction;
+  bool is_rtl;
   UBiDiLevel level;
   UScriptCode script;
 
   scoped_ptr<uint16[]> glyphs;
   scoped_ptr<SkPoint[]> positions;
   scoped_ptr<uint32[]> glyph_to_char;
   size_t glyph_count;
 
   skia::RefPtr<SkTypeface> skia_face;
   int font_size;
@@ skipping 64 matching lines @@
   std::vector<int32_t> logical_to_visual_;
 
   bool needs_layout_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderTextHarfBuzz);
 };
 
 }  // namespace gfx
 
 #endif  // UI_GFX_RENDER_TEXT_HARFBUZZ_H_