MD Settings: Restore focus after closing dialogs, for startup page.

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

Index: chrome/test/data/webui/settings/startup_urls_page_test.js
diff --git a/chrome/test/data/webui/settings/startup_urls_page_test.js b/chrome/test/data/webui/settings/startup_urls_page_test.js
index b502e999fe498e05493d0144006300e788303ed8..1377b75d34bc9a097fa334722c5dadc58da0cdbd 100644
--- a/chrome/test/data/webui/settings/startup_urls_page_test.js
+++ b/chrome/test/data/webui/settings/startup_urls_page_test.js
@@ -250,7 +250,9 @@ cr.define('settings_startup_urls_page', function() {
 
     test('EditPage_OpensDialog', function() {
       assertFalse(!!page.$$('settings-startup-url-dialog'));
-      page.fire(settings.EDIT_STARTUP_URL_EVENT, createSampleUrlEntry());
+      page.fire(
+          settings.EDIT_STARTUP_URL_EVENT,
+          {model: createSampleUrlEntry(), anchor: null});
       Polymer.dom.flush();
       assertTrue(!!page.$$('settings-startup-url-dialog'));
     });
@@ -271,7 +273,8 @@ cr.define('settings_startup_urls_page', function() {
       };
 
       cr.webUIListenerCallback('update-startup-pages', [entry1, entry2]);
-      page.fire(settings.EDIT_STARTUP_URL_EVENT, entry2);
+      page.fire(
+          settings.EDIT_STARTUP_URL_EVENT, {model: entry2, anchor: null});
       Polymer.dom.flush();
 
       assertTrue(!!page.$$('settings-startup-url-dialog'));