Use plural formats and native digits

chrome/browser/resources/print_preview/settings/dpi_settings.js

 // 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.
 
 cr.define('print_preview', function() {
   'use strict';
 
   /**
    * Encapsulates all settings and logic related to the DPI selection UI.
    * @param {!print_preview.ticket_items.Dpi} ticketItem Used to read and write
    *     the DPI ticket item.
    * @constructor
    * @extends {print_preview.SettingsSectionSelect}
    */
   function DpiSettings(ticketItem) {
     print_preview.SettingsSectionSelect.call(this, ticketItem);
   };
 
   DpiSettings.prototype = {
     __proto__: print_preview.SettingsSectionSelect.prototype,
 
     /** @override */
     getDefaultDisplayName_: function(option) {
       var hDpi = option.horizontal_dpi || 0;
       var vDpi = option.vertical_dpi || 0;
-      if (hDpi > 0 && vDpi > 0 && hDpi != vDpi)
-        return loadTimeData.getStringF('nonIsotropicDpiItemLabel', hDpi, vDpi);
-      return loadTimeData.getStringF('dpiItemLabel', hDpi || vDpi);
+      if (hDpi > 0 && vDpi > 0 && hDpi != vDpi) {
+        return loadTimeData.getStringF('nonIsotropicDpiItemLabel',
+                                       hDpi.toLocaleString(),
+                                       vDpi.toLocaleString());
+      }
+      return loadTimeData.getStringF('dpiItemLabel',
+                                     (hDpi || vDpi).toLocaleString());
     }
   };
 
   // Export
   return {
     DpiSettings: DpiSettings
   };
 });