Converted Observatory cpu-profile element

runtime/observatory/tests/observatory_ui/nav/isolate-menu/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/nav/menu.dart';
 import 'package:observatory/src/elements/nav/isolate_menu.dart';
 import '../../mocks.dart';
 
-main(){
+main() {
   NavIsolateMenuElement.tag.ensureRegistration();
 
   final tag = NavMenuElement.tag.name;
 
   EventRepositoryMock events;
   final ref = const IsolateRefMock(id: 'i-id', name: 'old-name');
   final obj = const IsolateMock(id: 'i-id', name: 'new-name');
   setUp(() {
     events = new EventRepositoryMock();
   });
@@ skipping 38 matching lines @@
       events.add(new IsolateUpdateEventMock(isolate: obj));
       await e.onRendered.first;
       expect((e.shadowRoot.querySelector(tag) as NavMenuElement)
              .label.contains(ref.name), isFalse);
       expect((e.shadowRoot.querySelector(tag) as NavMenuElement)
             .label.contains(obj.name), isTrue);
       e.remove();
     });
   });
 }