Add Easy Unlock options to chrome://settings behind a flag.

chrome/browser/resources/options/browser_options.js

 // 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.
 
 cr.define('options', function() {
   var OptionsPage = options.OptionsPage;
   var ArrayDataModel = cr.ui.ArrayDataModel;
   var RepeatingButton = cr.ui.RepeatingButton;
   var HotwordSearchSettingIndicator = options.HotwordSearchSettingIndicator;
 
@@ skipping 378 matching lines @@
             !loadTimeData.getBoolean('multiple_profiles');
       }
 
       // Network section.
       if (!cr.isChromeOS) {
         $('proxiesConfigureButton').onclick = function(event) {
           chrome.send('showNetworkProxySettings');
         };
       }
 
+      // Easy Unlock section.
+      if (loadTimeData.getBoolean('easyUnlockEnabled')) {
+        $('easy-unlock-section').hidden = false;
+        $('easy-unlock-setup-button').onclick = function(event) {
+          chrome.send('launchEasyUnlockSetup');
+        };
+      }
+
       // Web Content section.
       $('fontSettingsCustomizeFontsButton').onclick = function(event) {
         OptionsPage.navigateToPage('fonts');
         chrome.send('coreOptionsUserMetricsAction', ['Options_FontSettings']);
       };
       $('defaultFontSize').onchange = function(event) {
         var value = event.target.options[event.target.selectedIndex].value;
         Preferences.setIntegerPref(
              'webkit.webprefs.default_fixed_font_size',
              value - OptionsPage.SIZE_DIFFERENCE_FIXED_STANDARD, true);
@@ skipping 495 matching lines @@
 
       // Move #enable-auto-login-checkbox to a different location on CrOS.
       if (cr.isChromeOs) {
         $('sync-general').insertBefore($('sync-status').nextSibling,
                                        $('enable-auto-login-checkbox'));
       }
       $('enable-auto-login-checkbox').hidden = !syncData.autoLoginVisible;
     },
 
     /**
+     * Update the UI depending on whether the current profile has a pairing for
+     * Easy Unlock.
+     * @param {boolean} hasPairing True if the current profile has a pairing.
+     */
+    updateEasyUnlock_: function(hasPairing) {
+      $('easy-unlock-setup').hidden = hasPairing;
+      $('easy-unlock-enable').hidden = !hasPairing;
+    },
+
+    /**
      * Update the UI depending on whether the current profile manages any
      * supervised users.
      * @param {boolean} show True if the current profile manages any supervised
      *     users.
      */
     updateManagesSupervisedUsers_: function(show) {
       $('profiles-supervised-dashboard-tip').hidden = !show;
       this.maybeShowUserSection_();
     },
 
@@ skipping 760 matching lines @@
     'showCreateProfileSuccess',
     'showCreateProfileWarning',
     'showHotwordSection',
     'showManagedUserImportError',
     'showManagedUserImportSuccess',
     'showMouseControls',
     'showTouchpadControls',
     'updateAccountPicture',
     'updateAutoLaunchState',
     'updateDefaultBrowserState',
+    'updateEasyUnlock',
     'updateManagesSupervisedUsers',
     'updateSearchEngines',
     'updateStartupPages',
     'updateSyncState',
   ].forEach(function(name) {
     BrowserOptions[name] = function() {
       var instance = BrowserOptions.getInstance();
       return instance[name + '_'].apply(instance, arguments);
     };
   });
 
   if (cr.isChromeOS) {
     /**
      * Returns username (canonical email) of the user logged in (ChromeOS only).
      * @return {string} user email.
      */
     // TODO(jhawkins): Investigate the use case for this method.
     BrowserOptions.getLoggedInUsername = function() {
       return BrowserOptions.getInstance().username_;
     };
   }
 
   // Export
   return {
     BrowserOptions: BrowserOptions
   };
 });