Centralized event streams

runtime/observatory/tests/observatory_ui/mocks/objects/event.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 VMUpdateEventMock implements M.VMUpdateEvent {
   final M.VMRef vm;
   final DateTime timestamp;
   const VMUpdateEventMock({this.timestamp, this.vm});
@@ skipping 24 matching lines @@
   final M.Error error;
   const IsolateRealodEventMock({this.timestamp, this.isolate, this.error});
 }
 class ServiceExtensionAddedEventMock implements M.ServiceExtensionAddedEvent {
   final DateTime timestamp;
   final M.IsolateRef isolate;
   final String extensionRPC;
   const ServiceExtensionAddedEventMock({this.extensionRPC, this.isolate,
       this.timestamp});
 }
+class DebuggerSettingsUpdateEventMock implements M.PauseStartEvent {
+  final DateTime timestamp;
+  final M.IsolateRef isolate;
+  const DebuggerSettingsUpdateEventMock({this.isolate, this.timestamp});
+}
 class PauseStartEventMock implements M.PauseStartEvent {
   final DateTime timestamp;
   final M.IsolateRef isolate;
   const PauseStartEventMock({this.isolate, this.timestamp});
 }
 class PauseExitEventMock implements M.PauseExitEvent {
   final DateTime timestamp;
   final M.IsolateRef isolate;
   const PauseExitEventMock({this.isolate, this.timestamp});
 }
@@ skipping 78 matching lines @@
   final M.IsolateRef isolate;
   final List<M.TimelineEvent> timelineEvents;
   const TimelineEventsEventMock({this.timestamp, this.isolate,
       this.timelineEvents});
 }
 class ConnectionClockedEventMock implements M.ConnectionClosedEvent {
   final DateTime timestamp;
   final String reason;
   const ConnectionClockedEventMock({this.timestamp, this.reason});
 }