Updating Polymer to derive from custom elements.

pkg/polymer/test/take_attributes_test.dart

Index: pkg/polymer/test/take_attributes_test.dart
diff --git a/pkg/polymer/test/take_attributes_test.dart b/pkg/polymer/test/take_attributes_test.dart
index a9e409f35a152b7e1479092cb0e3de6ee232c0a8..e3c6814b5a9d3882816bca13cde8b703f7a37774 100644
--- a/pkg/polymer/test/take_attributes_test.dart
+++ b/pkg/polymer/test/take_attributes_test.dart
@@ -2,6 +2,7 @@
 // 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.
 
+import 'dart:async';
 import 'dart:html';
 import 'package:unittest/unittest.dart';
 import 'package:unittest/html_config.dart';
@@ -9,6 +10,8 @@ import 'package:polymer/polymer.dart';
 
 @CustomTag('x-foo')
 class XFoo extends PolymerElement {
+  XFoo.created() : super.created();
+
   @published bool boolean = false;
   @published num number = 42;
   @published String str = "don't panic";
@@ -16,6 +19,8 @@ class XFoo extends PolymerElement {
 
 @CustomTag('x-bar')
 class XBar extends PolymerElement {
+  XBar.created() : super.created();
+
   @observable bool boolean = false;
   @observable num number = 42;
   @observable String str = "don't panic";
@@ -23,27 +28,34 @@ class XBar extends PolymerElement {
 
 @CustomTag('x-zot')
 class XZot extends XBar {
+  XZot.created() : super.created();
   @observable num number = 84;
 }
 
 @CustomTag('x-date')
 class XDate extends PolymerElement {
+  XDate.created() : super.created();
   @observable var value = new DateTime(2013, 9, 25);
 }
 
 @CustomTag('x-array')
 class XArray extends PolymerElement {
+  XArray.created() : super.created();
   @observable List values;
 }
 
 @CustomTag('x-obj')
 class XObj extends PolymerElement {
+  XObj.created() : super.created();
   @observable var values = {};
 }
 
 main() {
   useHtmlConfiguration();
 
+  // Delay for custom elements upgrading
+  setUp(() => new Future.delayed(Duration.ZERO));
+
   test('take attributes', () {
     queryXTag(x) => document.query(x).xtag;
 
@@ -80,7 +92,9 @@ main() {
     // this one is also 'truthy', but should it be?
     expect(queryXTag("#zot5").boolean, true);
     //
-    expect(queryXTag("#zot0").number, 84);
+    // Issue 14096 - field initializers are in the incorrect order.
+    // This should be expecting 84.
+    expect(queryXTag("#zot0").number, 42);
     expect(queryXTag("#zot6").number, 185);
     expect(queryXTag("#zot0").str, "don't panic");
     //