Migrate <cr-dialog> from PaperDialogBehavior to native <dialog>.

chrome/test/data/webui/settings/device_page_tests.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.
 
 cr.define('device_page_tests', function() {
   /** @enum {string} */
   var TestNames = {
     DevicePage: 'device page',
     Display: 'display',
     Keyboard: 'keyboard',
@@ skipping 422 matching lines @@
         // Wait for the initial call to getInfo.
         fakeSystemDisplay.getInfoCalled.promise,
       ]).then(function() {
         // Add a display.
         addDisplay(1);
         fakeSystemDisplay.onDisplayChanged.callListeners();
 
         return Promise.all([
           fakeSystemDisplay.getInfoCalled.promise,
           fakeSystemDisplay.getLayoutCalled.promise,
-          new Promise(function(resolve, reject) { setTimeout(resolve); })
         ]);
       }).then(function() {
         // There should be a single display which should be primary and
         // selected. Mirroring should be disabled.
         expectEquals(1, displayPage.displays.length);
         expectEquals(
             displayPage.displays[0].id, displayPage.selectedDisplay.id);
         expectEquals(
             displayPage.displays[0].id, displayPage.primaryDisplayId);
         expectFalse(displayPage.showMirror_(displayPage.displays));
@@ skipping 65 matching lines @@
         expectTrue(displayPage.showMirror_(displayPage.displays));
         expectTrue(displayPage.isMirrored_(displayPage.displays));
       });
     });
   });
 
   return {
     TestNames: TestNames
   };
 });