Roll sdk dependency to 34357cdad108dcba734949bd13bd28c76ea285e0

lib/async/async_patch.dart

 // Copyright (c) 2015, the Fletch 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.md file.
 
 import 'dart:fletch._system' as fletch;
+import 'dart:fletch._system' show patch;
 import 'dart:fletch';
 import 'dart:fletch.os' as os;
 import 'dart:math';
 
-const patch = "patch";
-
 Channel _eventQueue;
 int _numberOfEvents = 0;
 
 void _handleEvents() {
   while (_numberOfEvents > 0) {
     var event = _eventQueue.receive();
     _numberOfEvents--;
     event();
   }
   _eventQueue = null;
@@ skipping 86 matching lines @@
   }
 
   @patch static Timer _createPeriodicTimer(Duration duration,
                                            void callback(Timer timer)) {
     int milliseconds = max(0, duration.inMilliseconds);
     return new _FletchTimer.periodic(_currentTimestamp + milliseconds,
                                      callback,
                                      milliseconds);
   }
 }
+
+@patch void _rethrow(Object error, StackTrace stackTrace) {
+  throw new AsyncError(error, stackTrace);
+}