Supports FontList in Textfield.

ui/gfx/font_list.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/font_list.h"
 
 #include <algorithm>
 
 #include "base/logging.h"
 #include "base/strings/string_number_conversions.h"
@@ skipping 190 matching lines @@
       font_description_string_ += name;
       font_description_string_ += ',';
     }
     // All fonts have the same style and size.
     font_description_string_ +=
         FontStyleAndSizeToString(fonts_[0].GetStyle(), fonts_[0].GetFontSize());
   }
   return font_description_string_;
 }
 
+int FontList::GetFontSize() const {
+  if (!fonts_.empty())
+    return fonts_[0].GetFontSize();
+
+  std::vector<std::string> font_names;
+  int font_style;
+  int font_size;
+  ParseFontDescriptionString(font_description_string_, &font_names,
+                             &font_style, &font_size);
+  return font_size;
+}
+
 const std::vector<Font>& FontList::GetFonts() const {
   if (fonts_.empty()) {
     DCHECK(!font_description_string_.empty());
 
     std::vector<std::string> font_names;
     int font_style;
     int font_size;
     ParseFontDescriptionString(font_description_string_, &font_names,
                                &font_style, &font_size);
     for (size_t i = 0; i < font_names.size(); ++i) {
       DCHECK(!font_names[i].empty());
 
       Font font(font_names[i], font_size);
       if (font_style == Font::NORMAL)
         fonts_.push_back(font);
       else
         fonts_.push_back(font.DeriveFont(0, font_style));
     }
   }
   return fonts_;
 }
 
+const Font& FontList::GetPrimaryFont() const {
+  return GetFonts()[0];
+}
+
 }  // namespace gfx