Optional binary payloads in VM service events.

runtime/vm/service/vmservice.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.
 
 library vmservice;
 
 import 'dart:async';
 import 'dart:convert';
 import 'dart:isolate';
 import 'dart:typed_data';
@@ skipping 64 matching lines @@
     switch (code) {
       case Constants.ISOLATE_STARTUP_MESSAGE_ID:
         runningIsolates.isolateStartup(port_id, sp, name);
       break;
       case Constants.ISOLATE_SHUTDOWN_MESSAGE_ID:
         runningIsolates.isolateShutdown(port_id, sp);
       break;
     }
   }
 
-  void _eventMessageHandler(int eventType, String eventMessage) {
+  void _eventMessageHandler(int eventType, dynamic eventMessage) {
     var subscribers = eventMap[eventType];
     if (subscribers == null) {
       return;
     }
     for (var subscriber in subscribers) {
       subscriber.post(null, eventMessage);
     }
   }
 
   void messageHandler(message) {
@@ skipping 51 matching lines @@
   return new VMService().eventPort;
 }
 
 void _registerIsolate(int port_id, SendPort sp, String name) {
   var service = new VMService();
   service.runningIsolates.isolateStartup(port_id, sp, name);
 }
 
 void _setEventMask(int mask)
     native "VMService_SetEventMask";