Very simple version of Isolates.

tests/standalone/vmservice/multiple_isolate_list_script.dart

Index: tests/standalone/vmservice/multiple_isolate_list_script.dart
diff --git a/tests/standalone/vmservice/multiple_isolate_list_script.dart b/tests/standalone/vmservice/multiple_isolate_list_script.dart
index 128f61a0cc73e237dc3ab62f62222bd9db973026..fd83cc5af9f86b6679efd10cb2b1afe819630afb 100644
--- a/tests/standalone/vmservice/multiple_isolate_list_script.dart
+++ b/tests/standalone/vmservice/multiple_isolate_list_script.dart
@@ -7,23 +7,19 @@ library multiple_isolate_list_script;
 import 'dart:io';
 import 'dart:isolate';
 
-void isolateMain1() {
+void isolateMain1(_) {
   // Spawn another isolate.
-  spawnFunction(myIsolateName);
-  // Kill this isolate.
-  port.close();
+  Isolate.spawn(myIsolateName, null);
 }
 
-void myIsolateName() {
+void myIsolateName(_) {
   // Stay running.
-  port.receive((a, b) {
-    port.close();
-  });
+  new ReceivePort().first.then((a) { });
   print(''); // Print blank line to signal that we are ready.
 }
 
 main() {
-  spawnFunction(isolateMain1);
+  Isolate.spawn(isolateMain1, null);
   // Wait until signaled from spawning test.
   stdin.first.then((_) => exit(0));
 }