Apply content-security-policy to the HTML options page. This is a

chrome/browser/resources/options/chromeos/system_options.js

-// 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.
-
-cr.define('options', function() {
-
-  var OptionsPage = options.OptionsPage;
-  /////////////////////////////////////////////////////////////////////////////
-  // SystemOptions class:
-
-  /**
-   * Encapsulated handling of ChromeOS system options page.
-   * @constructor
-   */
-
-  function SystemOptions() {
-    OptionsPage.call(this, 'system', templateData.systemPageTabTitle,
-                     'systemPage');
-  }
-
-  cr.addSingletonGetter(SystemOptions);
-
-  // Inherit SystemOptions from OptionsPage.
-  SystemOptions.prototype = {
-    __proto__: options.OptionsPage.prototype,
-
-    /**
-     * Initializes SystemOptions page.
-     * Calls base class implementation to starts preference initialization.
-     */
-    initializePage: function() {
-      OptionsPage.prototype.initializePage.call(this);
-      var timezone = $('timezone-select');
-      if (timezone) {
-        // Disable the timezone setting for non-owners, as this is a
-        // system wide setting.
-        if (!AccountsOptions.currentUserIsOwner())
-          timezone.disabled = true;
-      }
-
-      $('language-button').onclick = function(event) {
-        OptionsPage.navigateToPage('language');
-      };
-      $('modifier-keys-button').onclick = function(event) {
-        OptionsPage.navigateToPage('languageCustomizeModifierKeysOverlay');
-      };
-      $('accesibility-check').onchange = function(event) {
-        chrome.send('accessibilityChange',
-                    [String($('accesibility-check').checked)]);
-      };
-    }
-  };
-
-  //
-  // Chrome callbacks
-  //
-
-  /**
-   * Set the initial state of the accessibility checkbox.
-   */
-  SystemOptions.SetAccessibilityCheckboxState = function(checked) {
-    $('accesibility-check').checked = checked;
-  };
-
-  // Export
-  return {
-    SystemOptions: SystemOptions
-  };
-
-});