Remove password-manager-reauthentication flag

chrome/browser/resources/options/password_manager_list.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.passwordManager', function() {
   /** @const */ var ArrayDataModel = cr.ui.ArrayDataModel;
   /** @const */ var DeletableItemList = options.DeletableItemList;
   /** @const */ var DeletableItem = options.DeletableItem;
   /** @const */ var List = cr.ui.List;
 
@@ skipping 432 matching lines @@
     /**
      * Whether passwords can be revealed or not.
      * @type {boolean}
      * @private
      */
     showPasswords_: true,
 
     /** @override */
     decorate: function() {
       DeletableItemList.prototype.decorate.call(this);
-      Preferences.getInstance().addEventListener(
-          'profile.password_manager_allow_show_passwords',
-          this.onPreferenceChanged_.bind(this));
       this.addEventListener('focus', this.onFocus_.bind(this));
     },
 
     /**
      * Listener for changes on the preference.
      * @param {Event} event The preference update event.
      * @private
      */
     onPreferenceChanged_: function(event) {
       this.showPasswords_ = event.value.value;
@@ skipping 82 matching lines @@
     SHOWN_ORIGIN_FIELD: SHOWN_ORIGIN_FIELD,
     IS_ANDROID_URI_FIELD: IS_ANDROID_URI_FIELD,
     IS_CLICKABLE_FIELD: IS_CLICKABLE_FIELD,
     IS_SECURE_FIELD: IS_SECURE_FIELD,
     USERNAME_FIELD: USERNAME_FIELD,
     PASSWORD_FIELD: PASSWORD_FIELD,
     FEDERATION_FIELD: FEDERATION_FIELD,
     ORIGINAL_INDEX_FIELD: ORIGINAL_INDEX_FIELD
   };
 });