SendPort + ReceivePort changes:

samples/isolate_html/IsolateSample.dart

 // Copyright (c) 2011, 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.
 
 /**
  * These are the messages we are going to send to the isolates
  * that we create.
  */
 class MessageId {
   static final INIT = "init";
@@ skipping 53 matching lines @@
     for (Element element in document.queryAll(".sendButton")) {
       element.on.click.add((Event e) {
         replyElement.text = "waiting for reply...";
 
         // get the last letter on the button (assuming the button text is, for
         // example, "send message to A".
         String buttonText = e.currentTarget.dynamic.attributes["value"];
         String isolateName = buttonText[buttonText.length - 1];
         String greeting = document.query("#greetingText").dynamic.value;
         var message = { "id": MessageId.GREETING, "args" : [ greeting ] };
-        ports[isolateName].call(message).receive(
-            (var msg, SendPort replyTo) {
-              replyElement.text = msg;
+        ports[isolateName].call(message).then((var msg) {
+          replyElement.text = msg;
         });
       });
     }
 
     chirpPort.receive((var message, SendPort replyTo) {
       replyElement.text = message;
     });
   }
 
   static void main() {
@@ skipping 58 matching lines @@
         "received message: <span class='messageText'>'${message}'</span>";
       if (div.query(".replyCheckbox").dynamic.checked) {
         InputElement element = div.query(".delayTextbox");
         int millis = Math.parseInt(element.value);
         window.setTimeout(() {
           replyTo.send("this is a reply from isolate '${isolateName}'", null);
         }, millis);
       }
   }
 }