Removed template_wrappers_test

tests/html/custom/template_wrappers_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 template_wrappers_test;
-
-import 'dart:async';
-import 'dart:html';
-import 'dart:js' as js;
-import 'package:unittest/html_config.dart';
-import 'package:unittest/unittest.dart';
-import '../utils.dart';
-
-int createdCount = 0;
-
-class CustomElement extends HtmlElement {
-  CustomElement.created() : super.created() {
-    ++createdCount;
-  }
-
-  void checkCreated() {
-  }
-}
-
-main() {
-  useHtmlConfiguration();
-
-  setUp(() => customElementsReady);
-
-  test('element is upgraded once', () {
-
-    expect(createdCount, 0);
-    document.registerElement('x-custom', CustomElement);
-    expect(createdCount, 0);
-
-    var element = document.createElement('x-custom');
-    expect(createdCount, 1);
-
-    forceGC();
-
-    return new Future.delayed(new Duration(milliseconds: 50)).then((_) {
-      var t = document.querySelector('.t1');
-
-      var fragment = t.content;
-
-      fragment.querySelector('x-custom').attributes['foo'] = 'true';
-      expect(createdCount, 1);
-    });
-  });
-/*
-  test('old wrappers do not cause multiple upgrades', () {
-    createdCount = 0;
-    var d1 = document.querySelector('x-custom-two');
-    d1.attributes['foo'] = 'bar';
-    d1 = null;
-
-    document.registerElement('x-custom-two', CustomElement);
-
-    expect(createdCount, 1);
-
-    forceGC();
-
-    return new Future.delayed(new Duration(milliseconds: 50)).then((_) {
-      var d = document.querySelector('x-custom-two');
-      expect(createdCount, 1);
-    });
-  });
-*/
-}
-
-
-void forceGC() {
-  var N = 1000000;
-  var M = 100;
-  for (var i = 0; i < M; ++i) {
-    var l = new List(N);
-  }
-}