- Remove the reply_port from the VM internal message object.

runtime/bin/vmservice/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 69 matching lines @@
       return message.response;
     }
     if ((message.path.length == 1) && (message.path[0] == 'clients')) {
       _clientCollection(message);
       return message.response;
     }
     return runningIsolates.route(message);
   }
 }
 
-void sendServiceMessage(SendPort sp, ReceivePort rp, Object m)
+void sendServiceMessage(SendPort sp, Object m)
     native "VMService_SendServiceMessage";