Platform.upgradeCustomElements for Dartium

tests/html/custom_elements_test.dart

 // Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 library custom_elements_test;
 import 'dart:async';
 import 'dart:html';
 import 'package:unittest/html_individual_config.dart';
 import 'package:unittest/unittest.dart';
 
@@ skipping 156 matching lines @@
     });
   });
 
   group('lifecycle', () {
     test('onCreated', () {
       int oldCount = customCreatedCount;
       var tag = nextTag;
       document.register(tag, CustomType);
       var element = new DivElement();
       element.innerHtml = '<$tag></$tag>';
+      Platform.upgradeCustomElements(element);
       document.body.nodes.add(element);
       expect(customCreatedCount, oldCount + 1);
     });
   });
 
   group('mixins', () {
     test('can invoke mixin methods', () {
       var tag = nextTag;
       document.register(tag, CustomType);
 
       var element = new Element.tag(tag);
       element.invokeMixinMethod();
       expect(element.mixinMethodCalled, isTrue);
     });
   });
 }