SDK fixes

test/generated_sdk/lib/async/zone.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;
 
 typedef dynamic ZoneCallback();
 typedef dynamic ZoneUnaryCallback(arg);
 typedef dynamic ZoneBinaryCallback(arg1, arg2);
 
@@ skipping 585 matching lines @@
   _ZoneFunction get _registerUnaryCallback;
   _ZoneFunction get _registerBinaryCallback;
   _ZoneFunction get _errorCallback;
   _ZoneFunction get _scheduleMicrotask;
   _ZoneFunction get _createTimer;
   _ZoneFunction get _createPeriodicTimer;
   _ZoneFunction get _print;
   _ZoneFunction get _fork;
   _ZoneFunction get _handleUncaughtError;
   _Zone get parent;
-  _ZoneDelegate get _delegate;
+  ZoneDelegate get _delegate;
   Map get _map;
 
   bool inSameErrorZone(Zone otherZone) {
     return identical(this, otherZone) ||
            identical(errorZone, otherZone.errorZone);
   }
 }
 
 class _CustomZone extends _Zone {
   // The actual zone and implementation of each of these
@@ skipping 627 matching lines @@
                                    handleUncaughtError: errorHandler);
   }
   Zone zone = Zone.current.fork(specification: zoneSpecification,
                                 zoneValues: zoneValues);
   if (onError != null) {
     return zone.runGuarded(body);
   } else {
     return zone.run(body);
   }
 }