| Index: mojo/public/dart/core.dart | 
| diff --git a/mojo/public/dart/core.dart b/mojo/public/dart/core.dart | 
| index 6f261045a51628224ca8c3a9106f7792b3242de0..15b5363e67de8697a93d70bd3a55f86e7b00c425 100644 | 
| --- a/mojo/public/dart/core.dart | 
| +++ b/mojo/public/dart/core.dart | 
| @@ -5,16 +5,15 @@ | 
| library core; | 
|  | 
| import 'dart:async'; | 
| -import 'dart:core'; | 
| +import 'dart:collection'; | 
| import 'dart:isolate'; | 
| import 'dart:typed_data'; | 
| -import 'dart-ext:src/mojo_dart_core'; | 
|  | 
| part 'src/buffer.dart'; | 
| part 'src/data_pipe.dart'; | 
| part 'src/handle.dart'; | 
| part 'src/handle_watcher.dart'; | 
| part 'src/message_pipe.dart'; | 
| +part 'src/timer_impl.dart'; | 
| +part 'src/timer_queue.dart'; | 
| part 'src/types.dart'; | 
| - | 
| -void mojoSystemThunksSet(int thunks) native "MojoSystemThunks_Set"; | 
|  |