Support getting the font list in Pepper. This currently only works out of

content/common/font_list_gtk.cc

 // Copyright (c) 2011 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 "chrome/browser/ui/webui/options/font_settings_utils.h"
+#include "content/common/font_list.h"
+
+#include <pango/pango.h>
+#include <pango/pangocairo.h>
 
 #include <set>
 #include <string>
 
-#include <pango/pango.h>
-#include <pango/pangocairo.h>
-
 #include "base/values.h"
 
-ListValue* FontSettingsUtilities::GetFontsList() {
+namespace content {
+
+ListValue* GetFontList_SlowBlocking() {
   ListValue* font_list = new ListValue;
 
   PangoFontMap* font_map = ::pango_cairo_font_map_get_default();
   PangoFontFamily** families = NULL;
   int num_families = 0;
   ::pango_font_map_list_families(font_map, &families, &num_families);
 
   std::set<std::string> sorted_families;
   for (int i = 0; i < num_families; i++) {
     sorted_families.insert(::pango_font_family_get_name(families[i]));
   }
   g_free(families);
 
   for (std::set<std::string>::const_iterator iter = sorted_families.begin();
        iter != sorted_families.end(); ++iter) {
     ListValue* font_item = new ListValue();
     font_item->Append(Value::CreateStringValue(*iter));
     font_item->Append(Value::CreateStringValue(*iter));  // localized name.
     // TODO(yusukes): Support localized family names.
     font_list->Append(font_item);
   }
 
   return font_list;
 }
 
-void FontSettingsUtilities::ValidateSavedFonts(PrefService* prefs) {
-  // nothing to do for GTK.
-}
+}  // namespace content