Keep the original index of password list items when filtering, so the right password can be deleted.

chrome/browser/resources/options/password_manager_list.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.passwordManager', function() {
   const ArrayDataModel = cr.ui.ArrayDataModel;
   const DeletableItemList = options.DeletableItemList;
   const DeletableItem = options.DeletableItem;
   const List = cr.ui.List;
 
   /**
    * Creates a new passwords list item.
-   * @param {Array} entry An array of the form [url, username, password].
+   * @param {Array} entry An array of the form [url, username, password]. When
+   *     the list has been filtered, a fourth element [index] may be present.
    * @constructor
    * @extends {cr.ui.ListItem}
    */
   function PasswordListItem(entry, showPasswords) {
     var el = cr.doc.createElement('div');
     el.dataItem = entry;
     el.__proto__ = PasswordListItem.prototype;
     el.decorate(showPasswords);
 
     return el;
@@ skipping 198 matching lines @@
       this.redraw();
     },
 
     /** @inheritDoc */
     createItem: function(entry) {
       return new PasswordListItem(entry, this.showPasswords_);
     },
 
     /** @inheritDoc */
     deleteItemAtIndex: function(index) {
+      var item = this.dataModel.item(index);
+      if (item && item.length > 3) {
+        // The fourth element, if present, is the original index to delete.
+        index = item[3];
+      }
       PasswordManager.removeSavedPassword(index);
     },
 
     /**
      * The length of the list.
      */
     get length() {
       return this.dataModel.length;
     },
   };
@@ skipping 26 matching lines @@
     },
   };
 
   return {
     PasswordListItem: PasswordListItem,
     PasswordExceptionsListItem: PasswordExceptionsListItem,
     PasswordsList: PasswordsList,
     PasswordExceptionsList: PasswordExceptionsList,
   };
 });