MD User Manager: Refactors existing dialogs in User Manager into <user-manager-dialog>

chrome/test/data/webui/md_user_manager/control_bar_tests.js

Index: chrome/test/data/webui/md_user_manager/control_bar_tests.js
diff --git a/chrome/test/data/webui/md_user_manager/control_bar_tests.js b/chrome/test/data/webui/md_user_manager/control_bar_tests.js
index f6901059557fb13a613864c03735b94ef1d27061..fa04af1044abd34f2428b917955a72ce4bb045b1 100644
--- a/chrome/test/data/webui/md_user_manager/control_bar_tests.js
+++ b/chrome/test/data/webui/md_user_manager/control_bar_tests.js
@@ -92,7 +92,7 @@ cr.define('user_manager.control_bar_tests', function() {
           Polymer.dom.flush();
 
           // The dialog is visible.
-          assertLT(0, errorDialogElement.$$('#backdrop').offsetHeight);
+          assertLT(0, errorDialogElement.$.dialog.$$('#backdrop').offsetHeight);
         });
       });
 
@@ -105,7 +105,7 @@ cr.define('user_manager.control_bar_tests', function() {
           Polymer.dom.flush();
 
           // The error dialog is visible.
-          assertLT(0, errorDialogElement.$$('#backdrop').offsetHeight);
+          assertLT(0, errorDialogElement.$.dialog.$$('#backdrop').offsetHeight);
         });
       });
     });