Make RenderTextHarfBuzz examine full font list.

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 <map>
 
 #include "base/i18n/bidi_line_iterator.h"
@@ skipping 1079 matching lines @@
 }
 
 void RenderTextHarfBuzz::ShapeRun(internal::TextRunHarfBuzz* run) {
   const Font& primary_font = font_list().GetPrimaryFont();
   run->font_size = primary_font.GetFontSize();
 
   std::string best_family;
   FontRenderParams best_render_params;
   size_t best_missing_glyphs = std::numeric_limits<size_t>::max();
 
-  if (CompareFamily(run, primary_font.GetFontName(),
-                    primary_font.GetFontRenderParams(),
-                    &best_family, &best_render_params, &best_missing_glyphs))
-    return;
+  for (const Font& font : font_list().GetFonts()) {
+    if (CompareFamily(run, font.GetFontName(), font.GetFontRenderParams(),
+                      &best_family, &best_render_params, &best_missing_glyphs))
+      return;
+  }
 
 #if defined(OS_WIN)
   Font uniscribe_font;
   const base::char16* run_text = &(GetLayoutText()[run->range.start()]);
   if (GetUniscribeFallbackFont(primary_font, run_text, run->range.length(),
                                &uniscribe_font) &&
       CompareFamily(run, uniscribe_font.GetFontName(),
                     uniscribe_font.GetFontRenderParams(),
                     &best_family, &best_render_params, &best_missing_glyphs))
     return;
@@ skipping 76 matching lines @@
       run->width = std::floor(run->width + 0.5f);
 #endif
   }
 
   hb_buffer_destroy(buffer);
   hb_font_destroy(harfbuzz_font);
   return true;
 }
 
 }  // namespace gfx