| Index: sdk/lib/io/file_impl.dart | 
| diff --git a/sdk/lib/io/file_impl.dart b/sdk/lib/io/file_impl.dart | 
| index 34808d839bdbdd596b7fa9e5fa4422e08ec44753..59695a20c4065628f2a160de0b253aa8805048d1 100644 | 
| --- a/sdk/lib/io/file_impl.dart | 
| +++ b/sdk/lib/io/file_impl.dart | 
| @@ -770,7 +770,7 @@ class _RandomAccessFile implements RandomAccessFile { | 
|  | 
| _BufferAndStart result; | 
| try { | 
| -      result = _ensureFastAndSerializableBuffer(buffer, start, end); | 
| +      result = _ensureFastAndSerializableData(buffer, start, end); | 
| } catch (e) { | 
| return new Future.error(e); | 
| } | 
| @@ -805,7 +805,7 @@ class _RandomAccessFile implements RandomAccessFile { | 
| if (end == start) return; | 
| _checkReadWriteListArguments(buffer.length, start, end); | 
| _BufferAndStart bufferAndStart = | 
| -        _ensureFastAndSerializableBuffer(buffer, start, end); | 
| +        _ensureFastAndSerializableData(buffer, start, end); | 
| var result = _writeFrom(_id, | 
| bufferAndStart.buffer, | 
| bufferAndStart.start, | 
|  |