WebUI: Make settings-action-menu re-usable as cr-action-menu.

chrome/test/data/webui/cr_elements/cr_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} */
+/** @fileoverview Tests for cr-action-menu element. */
+suite('CrActionMenu', function() {
+  /** @type {?CrActionMenuElement} */
   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">
+      <dialog is="cr-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]');
+    menu = document.querySelector('dialog[is=cr-action-menu]');
     items = menu.querySelectorAll('.dropdown-item');
     assertEquals(3, items.length);
   });
 
   teardown(function() {
     if (menu.open)
       menu.close();
   });
 
   test('focus after showing', function() {
@@ skipping 55 matching lines @@
     window.dispatchEvent(new CustomEvent('resize'));
     assertFalse(menu.open);
   });
 
   test('close on Tab', function() {
     menu.showAt(document.querySelector('#dots'));
     assertTrue(menu.open);
 
     MockInteractions.keyDownOn(menu, 'Tab', [], 'Tab');
     assertFalse(menu.open);
   });

[Dan Beam, 2016/11/01 18:13:00]

how do you plan to test RTL now that you're using isRTL()?

[dpapad, 2016/11/01 18:31:03]

My thinking was the following:
Currently we don't test for RTL (even before this CL), so the direction_delegate
dependency was not benefiting us in any way yet, it was simply making the
settings -> cr migration harder. So, I am using isRTL() to unblock the
migration, and have one canonical action menu across WebUI. Then we can either
figure out a way to migrate direction_delagate and add RTL tests or just mock
util.js#isRTL() during testing. FWIW, I could not find an cr_elemnts that test
for RTL already.

 });