MD Settings: Restore focus after closing dialogs, for passwords page.

chrome/browser/resources/settings/passwords_and_forms_page/passwords_section.js

 // Copyright 2015 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.
 
 /**
  * @fileoverview 'passwords-section' is the collapsible section containing
  * the list of saved passwords as well as the list of sites that will never
  * save any passwords.
  */
 
@@ skipping 198 matching lines @@
       type: String,
       value: '',
     },
   },
 
   listeners: {
     'show-password': 'showPassword_',
   },
 
   /**
+   * The element to return focus to, when the currently active dialog is
+   * closed.
+   * @private {?HTMLElement}
+   */
+  activeDialogAnchor_: null,
+
+  /**
    * @type {PasswordManager}
    * @private
    */
   passwordManager_: null,
 
   /**
    * @type {?function(!Array<PasswordManager.PasswordUiEntry>):void}
    * @private
    */
   setSavedPasswordsListener_: null,
@@ skipping 62 matching lines @@
    */
   onMenuEditPasswordTap_: function(e) {
     e.preventDefault();
     /** @type {CrActionMenuElement} */(this.$.menu).close();
     this.showPasswordEditDialog_ = true;
   },
 
   /** @private */
   onPasswordEditDialogClosed_: function() {
     this.showPasswordEditDialog_ = false;
+    this.activeDialogAnchor_.focus();
+    this.activeDialogAnchor_ = null;
   },
 
   /**
    * @param {!Array<!chrome.passwordsPrivate.PasswordUiEntry>} savedPasswords
    * @param {string} filter
    * @return {!Array<!chrome.passwordsPrivate.PasswordUiEntry>}
    * @private
    */
   getFilteredPasswords_: function(savedPasswords, filter) {
     if (!filter)
@@ skipping 43 matching lines @@
   getEmptyPassword_: function(length) {
     return ' '.repeat(length);
   },
 
   /**
    * Opens the password action menu.
    * @private
    */
   onPasswordMenuTap_: function(e) {
     var menu = /** @type {!CrActionMenuElement} */(this.$.menu);
-    var target = /** @type {!Element} */(Polymer.dom(e).localTarget);
+    var target = /** @type {!HTMLElement} */(Polymer.dom(e).localTarget);
     var passwordUiEntryEvent = /** @type {!PasswordUiEntryEvent} */(e);
 
     this.activePassword =
         /** @type {!chrome.passwordsPrivate.PasswordUiEntry} */ (
             passwordUiEntryEvent.model.item);
     menu.showAt(target);
+    this.activeDialogAnchor_ = target;
   },
 
   /**
    * Returns true if the list exists and has items.
    * @param {Array<Object>} list
    * @return {boolean}
    * @private
    */
   hasSome_: function(list) {
     return !!(list && list.length);
@@ skipping 15 matching lines @@
   /**
    * @private
    * @param {boolean} toggleValue
    * @return {string}
    */
   getOnOffLabel_: function(toggleValue) {
     return toggleValue ? this.i18n('toggleOn') : this.i18n('toggleOff');
   }
 });
 })();