fix fields that override getters/setters

lib/runtime/dart/async.js

Index: lib/runtime/dart/async.js
diff --git a/lib/runtime/dart/async.js b/lib/runtime/dart/async.js
index 12637f73e4854f1e52a9d0aaac207d5edf881443..3dcfd5f8338ae87e5d249269bd6b5c2768aa6eeb 100644
--- a/lib/runtime/dart/async.js
+++ b/lib/runtime/dart/async.js
@@ -851,9 +851,9 @@ var async;
   let _recordCancel = Symbol('_recordCancel');
   let _recordPause = Symbol('_recordPause');
   let _recordResume = Symbol('_recordResume');
+  let _STATE_CANCEL_ON_ERROR = Symbol('_STATE_CANCEL_ON_ERROR');
   let _zone = Symbol('_zone');
   let _state = Symbol('_state');
-  let _STATE_CANCEL_ON_ERROR = Symbol('_STATE_CANCEL_ON_ERROR');
   let _onData = Symbol('_onData');
   let _onError = Symbol('_onError');
   let _onDone = Symbol('_onDone');
@@ -3585,9 +3585,9 @@ var async;
     return _BroadcastSubscriptionWrapper;
   });
   let _BroadcastSubscriptionWrapper = _BroadcastSubscriptionWrapper$();
+  let _STATE_FOUND = Symbol('_STATE_FOUND');
   let _current = Symbol('_current');
   let _futureOrPrefetch = Symbol('_futureOrPrefetch');
-  let _STATE_FOUND = Symbol('_STATE_FOUND');
   let _STATE_DONE = Symbol('_STATE_DONE');
   let _STATE_MOVING = Symbol('_STATE_MOVING');
   let _STATE_EXTRA_DATA = Symbol('_STATE_EXTRA_DATA');