Chromium Code Reviews| Index: runtime/lib/utf/utf_vm.dart | 
| diff --git a/runtime/lib/utf/utf_vm.dart b/runtime/lib/utf/utf_vm.dart | 
| index a3d815166a909823c9b1aac6dc43233445fdac36..f823b43ef176a8718e0a1d5c7dcba43e62ff27b8 100644 | 
| --- a/runtime/lib/utf/utf_vm.dart | 
| +++ b/runtime/lib/utf/utf_vm.dart | 
| @@ -6,3 +6,5 @@ | 
| // remove this file and update runtime/bin/utf_sources.gypi . | 
| library utf; | 
| + | 
| +import "dart:async"; |