[Cleanup] Clean up Easy Unlock code a bit.

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.exportPath('options');
 
 /**
  * @typedef {{actionLinkText: (string|undefined),
  *            childUser: (boolean|undefined),
  *            hasError: (boolean|undefined),
@@ skipping 1079 matching lines @@
       // Disable the "customize / set up sync" button if sync has an
       // unrecoverable error. Also disable the button if sync has not been set
       // up and the user is being presented with a link to re-auth.
       // See crbug.com/289791.
       customizeSyncButton.disabled =
           syncData.hasUnrecoverableError ||
           (!syncData.setupCompleted && !$('sync-action-link').hidden);
     },
 
     /**
-     * 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.
+     * Update the UI depending on whether Easy Unlock is enabled for the current
+     * profile.
+     * @param {boolean} isEnabled True if the feature is enabled for the current
+     *     profile.
      */
-    updateEasyUnlock_: function(hasPairing) {
-      $('easy-unlock-setup').hidden = hasPairing;
-      $('easy-unlock-enable').hidden = !hasPairing;
-      if (!hasPairing && EasyUnlockTurnOffOverlay.getInstance().visible) {
+    updateEasyUnlock_: function(isEnabled) {
+      $('easy-unlock-disabled').hidden = isEnabled;
+      $('easy-unlock-enabled').hidden = !isEnabled;
+      if (!isEnabled && EasyUnlockTurnOffOverlay.getInstance().visible) {
         EasyUnlockTurnOffOverlay.dismiss();
       }
     },
 
     /**
      * 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.
      */
@@ skipping 1116 matching lines @@
       }
       button.textContent = loadTimeData.getString(strId);
     };
   }
 
   // Export
   return {
     BrowserOptions: BrowserOptions
   };
 });