| Index: runtime/lib/lib_prefix.dart
 | 
| diff --git a/runtime/lib/lib_prefix.dart b/runtime/lib/lib_prefix.dart
 | 
| index 1b0e87d79dccbd1616246e72e96428379331a369..f457b020f8a722e43685eee8787832d7b1c31158 100644
 | 
| --- a/runtime/lib/lib_prefix.dart
 | 
| +++ b/runtime/lib/lib_prefix.dart
 | 
| @@ -2,6 +2,9 @@
 | 
|  // 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.
 | 
|  
 | 
| +import "dart:async";
 | 
| +import "dart:isolate";
 | 
| +
 | 
|  // This type corresponds to the VM-internal class LibraryPrefix.
 | 
|  class _LibraryPrefix {
 | 
|    bool _load() native "LibraryPrefix_load";
 | 
| 
 |