| Index: chrome/browser/process_singleton_win.cc
 | 
| diff --git a/chrome/browser/process_singleton_win.cc b/chrome/browser/process_singleton_win.cc
 | 
| index 10042578ef5d1f8cb66dcfe2a6f4db5a0f9cd505..3d83b26220ba96406a868e2c8920b81964955c53 100644
 | 
| --- a/chrome/browser/process_singleton_win.cc
 | 
| +++ b/chrome/browser/process_singleton_win.cc
 | 
| @@ -269,6 +269,7 @@ ProcessSingleton::ProcessSingleton(
 | 
|  }
 | 
|  
 | 
|  ProcessSingleton::~ProcessSingleton() {
 | 
| +  DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
 | 
|    if (lock_file_ != INVALID_HANDLE_VALUE)
 | 
|      ::CloseHandle(lock_file_);
 | 
|  }
 | 
| 
 |