Propagate stack traces.

sdk/lib/async/stream.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.
 
 part of dart.async;
 
 // -------------------------------------------------------------------
 // Core Stream types
 // -------------------------------------------------------------------
 
@@ skipping 49 matching lines @@
    *
    * When the future completes, the stream will fire one event, either
    * data or error, and then close with a done-event.
    */
   factory Stream.fromFuture(Future<T> future) {
     StreamController<T> controller = new StreamController<T>(sync: true);
     future.then((value) {
         controller.add(value);
         controller.close();
       },
-      onError: (error) {
-        controller.addError(error);
+      onError: (error, stackTrace) {
+        controller.addError(error, stackTrace);
         controller.close();
       });
     return controller.stream;
   }
 
   /**
    * Creates a single-subscription stream that gets its data from [data].
    *
    * If iterating [data] throws an error, the stream ends immediately with
    * that error. No done event will be sent (iteration is not complete), but no
@@ skipping 1141 matching lines @@
    *
    * If you need to stop listening for values before the stream iterator is
    * automatically closed, you must call [cancel] to ensure that the stream
    * is properly closed.
    *
    * Returns a future if the cancel-operation is not completed synchronously.
    * Otherwise returns `null`.
    */
   Future cancel();
 }