Removed polymer & mirror from Observatory

runtime/observatory/lib/src/app/application.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.
 
 part of app;
 
 /// The observatory application. Instances of this are created and owned
 /// by the observatory_application custom element.
-class ObservatoryApplication extends Observable {
+class ObservatoryApplication {
   static ObservatoryApplication app;
   final RenderingQueue queue = new RenderingQueue();
   final TargetRepository targets = new TargetRepository();
   final EventRepository events = new EventRepository();
   final NotificationRepository notifications = new NotificationRepository();
   final _pageRegistry = new List<Page>();
   LocationManager _locationManager;
   LocationManager get locationManager => _locationManager;
-  @observable Page currentPage;
+  Page currentPage;
   VM _vm;
   VM get vm => _vm;
 
   _setVM(VM vm) {
     if (_vm == vm) {
       // Do nothing.
       return;
     }
     if (_vm != null) {
       _gcSubscription = null;
@@ skipping 52 matching lines @@
 
   Future stopLoggingEventListener() async {
     if (_loggingSubscription == null) {
       return;
     }
     _loggingSubscription.cancel();
     _loggingSubscription = null;
   }
 
 
-  @reflectable final ObservatoryApplicationElement rootElement;
+  final ObservatoryApplicationElement rootElement;
 
-  @reflectable ServiceObject lastErrorOrException;
+  ServiceObject lastErrorOrException;
 
   void _initOnce() {
     assert(app == null);
     app = this;
     _registerPages();
     Analytics.initialize();
     // Visit the current page.
     locationManager._visit();
   }
 
@@ skipping 129 matching lines @@
     }
 
     // TODO(turnidge): Report this failure via analytics.
     Logger.root.warning('Caught exception: ${e}\n${st}');
     notifications.add(new ExceptionNotification(e, stacktrace: st));
   }
 
   // This map keeps track of which curly-blocks have been expanded by the user.
   Map<String,bool> expansions = {};
 }