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

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

Index: chrome/test/data/webui/settings/device_page_tests.js
diff --git a/chrome/test/data/webui/settings/device_page_tests.js b/chrome/test/data/webui/settings/device_page_tests.js
index f4bf3ba0b4dc4778b58fcc0d6e9b78dd4992d055..282ee632ff2fe0b5718dd020f6ea27b4b67b73ba 100644
--- a/chrome/test/data/webui/settings/device_page_tests.js
+++ b/chrome/test/data/webui/settings/device_page_tests.js
@@ -434,7 +434,6 @@ cr.define('device_page_tests', function() {
         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