Make isolate tests work on drt (and hopefully dartium).

tests/isolate/message_test.dart

 // Copyright (c) 2012, 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.
 
 // Dart test program for testing serialization of messages.
 // VMOptions=--enable_type_checks --enable_asserts
 
 library MessageTest;
 import 'dart:isolate';
 import 'dart:async';
-import '../../pkg/unittest/lib/unittest.dart';
+import 'package:unittest/unittest.dart';
+import "remote_unittest_helper.dart";
 
 // ---------------------------------------------------------------------------
 // Message passing test.
 // ---------------------------------------------------------------------------
 
 class MessageTest {
   static const List list1 = const ["Hello", "World", "Hello", 0xfffffffffff];
   static const List list2 = const [null, list1, list1, list1, list1];
   static const List list3 = const [list2, 2.0, true, false, 0xfffffffffff];
   static const Map map1 = const {
@@ skipping 64 matching lines @@
   });
   replyTo.send(port.sendPort);
 }
 
 Future remoteCall(SendPort port, message) {
   ReceivePort receivePort = new ReceivePort();
   port.send([message, receivePort.sendPort]);
   return receivePort.first;
 }
 
-main() {
+void main([args, port]) {
+  if (testRemote(main, port)) return;
   test("send objects and receive them back", () {
     ReceivePort port = new ReceivePort();
     Isolate.spawn(pingPong, port.sendPort);
     port.first.then(expectAsync1((remote) {
       // Send objects and receive them back.
       for (int i = 0; i < MessageTest.elms.length; i++) {
         var sentObject = MessageTest.elms[i];
         remoteCall(remote, sentObject).then(expectAsync1((var receivedObject) {
           MessageTest.VerifyObject(i, receivedObject);
         }));
@@ skipping 23 matching lines @@
         expect(replyObject[0][3], equals(replyObject[4][4]));
       });
 
       // Shutdown the MessageServer.
       remoteCall(remote, -1).then(expectAsync1((int message) {
           expect(message, MessageTest.elms.length + 1);
       }));
     }));
   });
 }