Revert "Fix observatory tests broken by running dartfmt."

runtime/observatory/tests/observatory_ui/mocks/repositories/notification.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.
 
 part of mocks;
 
 class NotificationChangeEventMock implements M.NotificationChangeEvent {
   final NotificationRepositoryMock repository;
   const NotificationChangeEventMock({this.repository});
 }
 
 typedef void NotificationRepositoryMockCallback(M.Notification notification);
 
 class NotificationRepositoryMock implements M.NotificationRepository {
   final StreamController<M.NotificationChangeEvent> _onChange =
       new StreamController<M.NotificationChangeEvent>.broadcast();
   Stream<M.NotificationChangeEvent> get onChange => _onChange.stream;
 
   bool get hasListeners => _onChange.hasListener;
 
   final Iterable<M.Notification> _list;
   final NotificationRepositoryMockCallback _add;
   final NotificationRepositoryMockCallback _delete;
 
   bool addInvoked = false;
   bool listInvoked = false;
   bool deleteInvoked = false;
   bool deleteAllInvoked = false;
 
+
   void add(M.Notification notification) {
     addInvoked = true;
     if (_add != null) _add(notification);
   }
 
   Iterable<M.Notification> list() {
     listInvoked = true;
     return _list;
   }
 
   void delete(M.Notification notification) {
     deleteInvoked = true;
     if (_add != null) _delete(notification);
   }
 
-  void deleteAll() {
-    deleteAllInvoked = true;
-  }
+  void deleteAll() { deleteAllInvoked = true; }
 
   void triggerChangeEvent() {
     _onChange.add(new NotificationChangeEventMock(repository: this));
   }
 
-  NotificationRepositoryMock(
-      {Iterable<M.Notification> list: const [],
+  NotificationRepositoryMock({Iterable<M.Notification> list : const [],
       NotificationRepositoryMockCallback add,
       NotificationRepositoryMockCallback delete})
-      : _list = list,
-        _add = add,
-        _delete = delete;
+    : _list = list,
+      _add = add,
+      _delete = delete;
 }