Unify desktop Linux and Chrome OS font rendering params.

ui/gfx/render_text_pango.cc

 // Copyright (c) 2012 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_pango.h"
 
 #include <pango/pangocairo.h>
 #include <algorithm>
 #include <string>
 #include <vector>
@@ skipping 337 matching lines @@
   BreakList<bool>::const_iterator bold = styles()[BOLD].breaks().begin();
   BreakList<bool>::const_iterator italic = styles()[ITALIC].breaks().begin();
   while (bold != styles()[BOLD].breaks().end() &&
          italic != styles()[ITALIC].breaks().end()) {
     const int style = (bold->second ? Font::BOLD : 0) |
                       (italic->second ? Font::ITALIC : 0);
     const size_t bold_end = styles()[BOLD].GetRange(bold).end();
     const size_t italic_end = styles()[ITALIC].GetRange(italic).end();
     const size_t style_end = std::min(bold_end, italic_end);
     if (style != font_list().GetFontStyle()) {
+      // TODO(derat): Don't interpret gfx::FontList font descriptions as Pango
+      // font descriptions: http://crbug.com/393067
       FontList derived_font_list = font_list().DeriveWithStyle(style);
-      ScopedPangoFontDescription desc(pango_font_description_from_string(
-          derived_font_list.GetFontDescriptionString().c_str()));
+      ScopedPangoFontDescription desc(
+          derived_font_list.GetFontDescriptionString());
 
       PangoAttribute* pango_attr = pango_attr_font_desc_new(desc.get());
       pango_attr->start_index =
           TextIndexToLayoutIndex(std::max(bold->first, italic->first));
       pango_attr->end_index = TextIndexToLayoutIndex(style_end);
       pango_attr_list_insert(attrs, pango_attr);
     }
     bold += bold_end == style_end ? 1 : 0;
     italic += italic_end == style_end ? 1 : 0;
   }
@@ skipping 130 matching lines @@
                                           int glyph_index) const {
   return LayoutIndexToTextIndex(run->item->offset +
                                 run->glyphs->log_clusters[glyph_index]);
 }
 
 RenderText* RenderText::CreateNativeInstance() {
   return new RenderTextPango;
 }
 
 }  // namespace gfx