Add initial implementation of date-time-settings MD settings page.

chrome/browser/resources/settings/prefs/prefs.js

 /* Copyright 2015 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. */
 
 /**
  * @fileoverview
  * 'cr-settings-prefs' is an element which serves as a model for
  * interaction with settings which are stored in Chrome's
  * Preferences.
  *
@@ skipping 21 matching lines @@
   ];
 
   /**
    * A list of all CrOS-only pref paths used in the UI.
    * TODO(jlklein): This is a temporary workaround that needs to be removed
    * once settingsPrivate is implemented with the fetchAll function. We will
    * not need to tell the settingsPrivate API which prefs to fetch.
    * @const {!Array<string>}
    */
   var CROS_ONLY_PREFS = [
+    'cros.system.timezone',
     'settings.accessibility',
     'settings.a11y.autoclick',
     'settings.a11y.autoclick_delay_ms',
     'settings.a11y.enable_menu',
     'settings.a11y.high_contrast_enabled',
     'settings.a11y.large_cursor_enabled',
     'settings.a11y.screen_magnifier',
     'settings.a11y.sticky_keys_enabled',
     'settings.a11y.virtual_keyboard',
+    'settings.settings.clock.use_24Hour_Clock',
     'settings.touchpad.enable_tap_dragging',
   ];
 
   Polymer('cr-settings-prefs', {
     publish: {
       /**
        * Object containing all preferences.
        *
        * @attribute settings
        * @type {Object}
@@ skipping 154 matching lines @@
     /**
      * @param {string} propertyPath The full path of the pref.
      * @param {!Array} value The new value of the pref.
      * @private
      */
     setArrayPref_: function(propertyPath, value) {
       chrome.send('setListPref', [propertyPath, value]);
     },
   });
 })();