convert isolates to use Future

corelib/src/isolate.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.
 
 // Dart core library.
 
 /**
  * [SendPort]s are created from [ReceivePort]s. Any message sent through
  * a [SendPort] is delivered to its respective [ReceivePort]. There might be
  * many [SendPort]s for the same [ReceivePort].
@@ skipping 119 matching lines @@
   /**
    * Spawns a new isolate, using this instance as template.
    *
    * The new isolate lives in a new thread (for heavy templates)
    * or in the same thread as the current isolate (for light templates), if
    * possible.
    *
    * During the initialization of the new isolate a [ReceivePort] is created
    * inside the new isolate and stored in [port]. A corresponding
    * [SendPort] is sent to the isolate that invoked [spawn]. Since spawning an
-   * isolate is an asynchronous operation this method returns a [Promise] of
+   * isolate is an asynchronous operation this method returns a [Future] of
    * this [SendPort].
    *
    * A common pattern to instantiate new isolates is to enqueue the instructions
-   * in [Promise.then].
+   * in [Future.then].
    * [:myIsolate.spawn().then((SendPort port) { port.send('hi there'); });:]
    */
-  Promise<SendPort> spawn() {
+  Future<SendPort> spawn() {
     return IsolateNatives.spawn(this, _isLight);
   }
 
   // The private run method is invoked with the receive port. Before
   // main is invoked we store the port in a field so it can be
   // accessed from subclasses of Isolate.
   void _run(ReceivePort port) {
     _port = port;
     main();
   }
@@ skipping 13 matching lines @@
   /**
    * When isolates are created, an instance of the template's class is
    * instantiated in the new isolate. After the [port] has been set up, this
    * [main] method is invoked on the instance.
    */
   abstract void main();
 
   final bool _isLight;
   ReceivePort _port;
 }