Removed dynamic Symbol creation and marked Bindable classes

runtime/observatory/lib/src/elements/nav/notify_wrapper.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:observatory/app.dart';
 import 'package:observatory/repositories.dart';
 import 'package:observatory/src/elements/helpers/tag.dart';
 import 'package:observatory/src/elements/shims/binding.dart';
 import 'package:observatory/src/elements/nav/notify.dart';
 
+@bindable
 class NavNotifyElementWrapper extends HtmlElement {
-  static final binder = new Binder<NavNotifyElementWrapper>(
-    const [const Binding('notifications'), const Binding('notifyOnPause')]);
+  static const binder = const Binder<NavNotifyElementWrapper>(const {
+      'notifications': #notifications, 'notifyOnPause': #notifyOnPause
+    });
 
   static const tag = const Tag<NavNotifyElementWrapper>('nav-notify');
 
   NotificationRepository _notifications;
   bool _notifyOnPause = true;
   NotificationRepository get notifications => _notifications;
   bool get notifyOnPause => _notifyOnPause;
   set notifications(NotificationRepository value) {
     _notifications = value; render();
   }
@@ skipping 88 matching lines @@
         }
 
         nav-exception > div > button:hover, nav-event > div > button:hover {
           background: rgba(255,255,255,0.5);
         }''',
       new NavNotifyElement(_notifications, notifyOnPause: notifyOnPause,
                                  queue: ObservatoryApplication.app.queue)
     ];
   }
 }