|  | // Copyright (c) 2011 The Chromium Authors. All rights reserved. | 
|  | // Use of this source code is governed by a BSD-style license that can be | 
|  | // found in the LICENSE file. | 
|  |  | 
|  | #ifndef BASE_SYNCHRONIZATION_CANCELLATION_FLAG_H_ | 
|  | #define BASE_SYNCHRONIZATION_CANCELLATION_FLAG_H_ | 
|  |  | 
|  | #include "base/synchronization/atomic_flag.h" | 
|  |  | 
|  | namespace base { | 
|  |  | 
|  | // Use inheritance instead of "using" to allow forward declaration of "class | 
|  | // CancellationFlag". | 
|  | // TODO(fdoray): Replace CancellationFlag with AtomicFlag throughout the | 
|  | // codebase and delete this file. crbug.com/630251 | 
|  | class CancellationFlag : public AtomicFlag {}; | 
|  |  | 
|  | }  // namespace base | 
|  |  | 
|  | #endif  // BASE_SYNCHRONIZATION_CANCELLATION_FLAG_H_ |