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

chrome/test/data/webui/settings/startup_urls_page_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.
 
 cr.define('settings_startup_urls_page', function() {
   /**
    * @constructor
    * @implements {settings.StartupUrlsPageBrowserProxy}
    * @extends {settings.TestBrowserProxy}
    */
@@ skipping 73 matching lines @@
       browserProxy = new TestStartupUrlsPageBrowserProxy();
       settings.StartupUrlsPageBrowserProxyImpl.instance_ = browserProxy;
       PolymerTest.clearBody();
       dialog = document.createElement('settings-startup-url-dialog');
     });
 
     teardown(function() { dialog.remove(); });
 
     test('Initialization_Add', function() {
       document.body.appendChild(dialog);
-      assertTrue(dialog.$.dialog.opened);
+      assertTrue(dialog.$.dialog.open);
 
       // Assert that the "Add" button is disabled.
       var actionButton = dialog.$.actionButton;
       assertTrue(!!actionButton);
       assertTrue(actionButton.disabled);
 
       // Assert that the text field is empty.
       var inputElement = dialog.$.url;
       assertTrue(!!inputElement);
       assertEquals('', inputElement.value);
     });
 
     test('Initialization_Edit', function() {
       dialog.model = createSampleUrlEntry();
       document.body.appendChild(dialog);
-      assertTrue(dialog.$.dialog.opened);
+      assertTrue(dialog.$.dialog.open);
 
       // Assert that the "Edit" button is enabled.
       var actionButton = dialog.$.actionButton;
       assertTrue(!!actionButton);
       assertFalse(actionButton.disabled);
       // Assert that the text field is pre-populated.
       var inputElement = dialog.$.url;
       assertTrue(!!inputElement);
       assertEquals(dialog.model.url, inputElement.value);
     });
@@ skipping 33 matching lines @@
      */
     function testProxyCalled(proxyMethodName) {
       var actionButton = dialog.$.actionButton;
       actionButton.disabled = false;
 
       // Test that the dialog remains open if the user somehow manages to submit
       // an invalid URL.
       browserProxy.setUrlValidity(false);
       MockInteractions.tap(actionButton);
       return browserProxy.whenCalled(proxyMethodName).then(function() {
-        assertTrue(dialog.$.dialog.opened);
+        assertTrue(dialog.$.dialog.open);
 
         // Test that dialog is closed if the user submits a valid URL.
         browserProxy.setUrlValidity(true);
         browserProxy.resetResolver(proxyMethodName);
         MockInteractions.tap(actionButton);
         return browserProxy.whenCalled(proxyMethodName);
       }).then(function() {
-        assertFalse(dialog.$.dialog.opened);
+        assertFalse(dialog.$.dialog.open);
       });
     }
 
     test('AddStartupPage', function() {
       document.body.appendChild(dialog);
       return testProxyCalled('addStartupPage');
     });
 
     test('EditStartupPage', function() {
       dialog.model = createSampleUrlEntry();
@@ skipping 84 matching lines @@
     test('MenuOptions_Remove', function() {
       var removeButton = element.shadowRoot.querySelector('#remove')
       MockInteractions.tap(removeButton);
       return browserProxy.whenCalled('removeStartupPage').then(
           function(modelIndex) {
             assertEquals(element.model.modelIndex, modelIndex);
           });
     });
   });
 });