MD Settings: Remove usage of 'autofocus' from settings-action-menu.

chrome/test/data/webui/settings/settings_action_menu_test.js

 // Copyright 2016 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 Tests for settings-action-menu element. */
 suite('SettingsActionMenu', function() {
   /** @type {?SettingsActionMenuElement} */
   var menu = null;
 
   /** @type {?NodeList<HTMLElement>} */
   var items = null;
 
   setup(function() {
     PolymerTest.clearBody();
 
     document.body.innerHTML = `
       <button id="dots">...</button>
       <dialog is="settings-action-menu">
         <button class="dropdown-item">Un</button>
+        <hr>
         <button class="dropdown-item">Dos</button>
         <button class="dropdown-item">Tres</button>
       </dialog>
     `;
 
     menu = document.querySelector('dialog[is=settings-action-menu]');
     items = menu.querySelectorAll('.dropdown-item');
     assertEquals(3, items.length);
   });
 
   teardown(function() {
     if (menu.open)
       menu.close();
   });
 
   test('focus after showing', function() {
-    /** @param {!HTMLElement} element */
-    function assertFocused(element) {
-      assertEquals(element, menu.root.activeElement);
-      items.forEach(function(item, i) {
-        assertEquals(element === item, item.hasAttribute('autofocus'));
-      });
-    }
-
     menu.showAt(document.querySelector('#dots'));
-    assertFocused(items[0]);
+    assertEquals(menu.root.activeElement, items[0]);
 
     menu.close();
     items[0].hidden = true;
     menu.showAt(document.querySelector('#dots'));
-    assertFocused(items[1]);
+    assertEquals(menu.root.activeElement, items[1]);
 
     menu.close();
     items[1].hidden = true;
     menu.showAt(document.querySelector('#dots'));
-    assertFocused(items[2]);
+    assertEquals(menu.root.activeElement, items[2]);
 
     menu.close();
     items[2].disabled = true;
     menu.showAt(document.querySelector('#dots'));
     assertEquals(null, menu.root.activeElement);
-    assertEquals(0, menu.querySelectorAll('[autofocus]').length);
   });
 
   test('focus after down/up arrow', function() {
     function down() {
       MockInteractions.keyDownOn(menu, 'ArrowDown', [], 'ArrowDown');
     }
 
     function up() {
       MockInteractions.keyDownOn(menu, 'ArrowUp', [], 'ArrowUp');
     }
@@ skipping 30 matching lines @@
   });
 
   test('close on Tab', function() {
     menu.showAt(document.querySelector('#dots'));
     assertTrue(menu.open);
 
     MockInteractions.keyDownOn(menu, 'Tab', [], 'Tab');
     assertFalse(menu.open);
   });
 });