Update VM service to new isolate API

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:convert';
 import 'dart:isolate';
 import 'dart:typed_data';
 
 part 'constants.dart';
 part 'resources.dart';
 part 'running_isolate.dart';
 part 'running_isolates.dart';
 part 'service_request.dart';
 part 'service_request_router.dart';
 
 class VMService {
   static VMService _instance;
   RunningIsolates runningIsolates = new RunningIsolates();
+  final RawReceivePort receivePort;
 
-  void controlMessageHandler(int code, SendPort sp, String name) {
+  void controlMessageHandler(int code, int port_id, SendPort sp, String name) {
     switch (code) {
       case Constants.ISOLATE_STARTUP_MESSAGE_ID:
-        runningIsolates.isolateStartup(sp, name);
+        runningIsolates.isolateStartup(port_id, sp, name);
       break;
       case Constants.ISOLATE_SHUTDOWN_MESSAGE_ID:
-        runningIsolates.isolateShutdown(sp);
+        runningIsolates.isolateShutdown(port_id, sp);
       break;
     }
   }
 
   void messageHandler(message) {
-    if (message is List && message.length == 3) {
-      controlMessageHandler(message[0], message[1], message[2]);
+    assert(message is List);
+    assert(message.length == 4);
+    if (message is List && message.length == 4) {
+      controlMessageHandler(message[0], message[1], message[2], message[3]);
     }
   }
 
-  VMService._internal() {
-    port.listen(messageHandler);
+  VMService._internal() : receivePort = new RawReceivePort() {
+    receivePort.handler = messageHandler;
   }
 
   factory VMService() {
     if (VMService._instance == null) {
       VMService._instance = new VMService._internal();
     }
     return _instance;
   }
 }
 
 void sendServiceMessage(SendPort sp, ReceivePort rp, Object m)
     native "SendServiceMessage";