Update the navbar in the observatory

runtime/bin/vmservice/client/lib/src/observatory_elements/navigation_bar_isolate.dart

Index: runtime/bin/vmservice/client/lib/src/observatory_elements/navigation_bar_isolate.dart
diff --git a/runtime/bin/vmservice/client/lib/src/observatory_elements/navigation_bar_isolate.dart b/runtime/bin/vmservice/client/lib/src/observatory_elements/navigation_bar_isolate.dart
deleted file mode 100644
index e42a66e2ef025b96be9f5f98b76c99f37f627747..0000000000000000000000000000000000000000
--- a/runtime/bin/vmservice/client/lib/src/observatory_elements/navigation_bar_isolate.dart
+++ /dev/null
@@ -1,47 +0,0 @@
-// Copyright (c) 2014, 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 navigation_bar_isolate_element;
-
-import 'observatory_element.dart';
-import 'package:polymer/polymer.dart';
-
-@CustomTag('navigation-bar-isolate')
-class NavigationBarIsolateElement extends ObservatoryElement {
-  NavigationBarIsolateElement.created() : super.created();
-  @observable List<String> links = toObservable(
-      [ 'Stacktrace', 'Library', 'CPU Profile']);
-
-  void appChanged(oldValue) {
-    super.appChanged(oldValue);
-    notifyPropertyChange(#currentIsolateName, '', currentIsolateName);
-  }
-
-  String currentIsolateName() {
-    if (app == null) {
-      return '';
-    }
-    var isolate = app.locationManager.currentIsolate();
-    if (isolate == null) {
-      return '';
-    }
-    return isolate.name;
-  }
-
-  String currentIsolateLink(String link) {
-    if (app == null) {
-      return '';
-    }
-    switch (link) {
-      case 'Stacktrace':
-        return app.locationManager.currentIsolateRelativeLink('stacktrace');
-      case 'Library':
-        return app.locationManager.currentIsolateRelativeLink('library');
-      case 'CPU Profile':
-        return app.locationManager.currentIsolateRelativeLink('profile');
-      default:
-        return app.locationManager.currentIsolateRelativeLink('');
-    }
-  }
-}