Remove deprecated parts of dart:async.

sdk/lib/async/stream_controller.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.
 
 part of dart.async;
 
 // -------------------------------------------------------------------
 // Controller for creating and adding events to a stream.
 // -------------------------------------------------------------------
 
@@ skipping 382 matching lines @@
   void add(T value) {
     if (!_mayAddEvent) throw _badEventState();
     _add(value);
   }
 
   /**
    * Send or enqueue an error event.
    */
   void addError(Object error, [StackTrace stackTrace]) {
     if (!_mayAddEvent) throw _badEventState();
-    if (stackTrace != null) {
-      // Force stack trace overwrite. Even if the error already contained
-      // a stack trace.
-      _attachStackTrace(error, stackTrace);
-    }
     _addError(error, stackTrace);
   }
 
   /**
    * Closes this controller.
    *
    * After closing, no further events may be added using [add] or [addError].
    *
    * You are allowed to close the controller more than once, but only the first
    * call has any effect.
@@ skipping 184 matching lines @@
 
 typedef _NotificationHandler();
 
 Future _runGuarded(_NotificationHandler notificationHandler) {
   if (notificationHandler == null) return null;
   try {
     var result = notificationHandler();
     if (result is Future) return result;
     return null;
   } catch (e, s) {
-    Zone.current.handleUncaughtError(_asyncError(e, s), s);
+    Zone.current.handleUncaughtError(e, s);
   }
 }
 
 class _ControllerStream<T> extends _StreamImpl<T> {
   _StreamControllerLifecycle<T> _controller;
 
   _ControllerStream(this._controller);
 
   StreamSubscription<T> _createSubscription(bool cancelOnError) =>
     _controller._subscribe(cancelOnError);
@@ skipping 97 matching lines @@
   _StreamControllerAddStreamState(_StreamController controller,
                                   this.varData,
                                   Stream source,
                                   bool cancelOnError)
       : super(controller, source, cancelOnError) {
     if (controller.isPaused) {
       addSubscription.pause();
     }
   }
 }