Font fallback for UI

ui/gfx/render_text_harfbuzz.cc

 // 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.
 
 #include "ui/gfx/render_text_harfbuzz.h"
 
 #include <limits>
 #include <set>
 
 #include "base/i18n/bidi_line_iterator.h"
@@ skipping 1375 matching lines @@
   FontRenderParams best_render_params;
   size_t best_missing_glyphs = std::numeric_limits<size_t>::max();
 
   for (const Font& font : font_list().GetFonts()) {
     if (CompareFamily(text, font, font.GetFontRenderParams(), run, &best_font,
                       &best_render_params, &best_missing_glyphs))
       return;
   }
 
 #if defined(OS_WIN)
   Font uniscribe_font(primary_font);

[msw, 2016/06/23 20:59:38]

nit: rename |fallback_font| or similar

[Ilya Kulshin, 2016/06/24 20:48:24]

Done.

   std::string uniscribe_family;
   const base::char16* run_text = &(text[run->range.start()]);
-  if (GetUniscribeFallbackFont(primary_font, run_text, run->range.length(),
-                               &uniscribe_font)) {
+  if (GetFallbackFont(primary_font, run_text, run->range.length(),
+                      &uniscribe_font)) {
     uniscribe_family = uniscribe_font.GetFontName();
     if (CompareFamily(text, uniscribe_font,
                       uniscribe_font.GetFontRenderParams(), run,
                       &best_font, &best_render_params, &best_missing_glyphs))
       return;
   }
 #endif
 
   std::vector<Font> fallback_font_list = GetFallbackFonts(primary_font);
 
@@ skipping 173 matching lines @@
   DCHECK(!update_layout_run_list_);
   DCHECK(!update_display_run_list_);
   return text_elided() ? display_run_list_.get() : &layout_run_list_;
 }
 
 const internal::TextRunList* RenderTextHarfBuzz::GetRunList() const {
   return const_cast<RenderTextHarfBuzz*>(this)->GetRunList();
 }
 
 }  // namespace gfx