Adapt streams for additional stackTrace argument.

pkg/http/lib/src/utils.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.
 
 library utils;
 
 import 'dart:async';
 import 'dart:convert';
 import 'dart:io';
 import 'dart:typed_data';
@@ skipping 168 matching lines @@
 // TODO(nweiz): remove this when issue 7787 is fixed.
 /// Creates two single-subscription [Stream]s that each emit all values and
 /// errors from [stream]. This is useful if [stream] is single-subscription but
 /// multiple subscribers are necessary.
 Pair<Stream, Stream> tee(Stream stream) {
   var controller1 = new StreamController(sync: true);
   var controller2 = new StreamController(sync: true);
   stream.listen((value) {
     controller1.add(value);
     controller2.add(value);
-  }, onError: (error) {
-    controller1.addError(error);
-    controller2.addError(error);
+  }, onError: (error, [StackTrace stackTrace]) {
+    controller1.addError(error, stackTrace);
+    controller2.addError(error, stackTrace);
   }, onDone: () {
     controller1.close();
     controller2.close();
   });
   return new Pair<Stream, Stream>(controller1.stream, controller2.stream);
 }
 
 /// A pair of values.
 class Pair<E, F> {
   E first;
@@ skipping 28 matching lines @@
 /// The return values of all [Future]s are discarded. Any errors will cause the
 /// iteration to stop and will be piped through the return value.
 Future forEachFuture(Iterable input, Future fn(element)) {
   var iterator = input.iterator;
   Future nextElement(_) {
     if (!iterator.moveNext()) return new Future.value();
     return fn(iterator.current).then(nextElement);
   }
   return nextElement(null);
 }