Converted Observatory cpu-profile element

runtime/observatory/tests/observatory_ui/curly_block/element_test.dart

 // Copyright (c) 2016, 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.
+
 import 'dart:html';
 import 'package:unittest/unittest.dart';
 import 'package:observatory/src/elements/curly_block.dart';
 
 main() {
   CurlyBlockElement.tag.ensureRegistration();
 
   group('instantiation', () {
     test('default', () {
       final e = new CurlyBlockElement();
@@ skipping 154 matching lines @@
       e.expanded = !e.expanded;
       await e.onRendered.first;
     });
     test('does not fire if setting same expanded value', () async {
       e.onToggle.listen(expectAsync((_){}, count: 0));
       e.expanded = e.expanded;
       await e.onRendered.first;
     });
   });
 }