Move base to DEPS

base/barrier_closure.h

-// Copyright 2013 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_BARRIER_CLOSURE_H_
-#define BASE_BARRIER_CLOSURE_H_
-
-#include "base/base_export.h"
-#include "base/callback_forward.h"
-
-namespace base {
-
-// BarrierClosure executes |done_closure| after it has been invoked
-// |num_closures| times.
-//
-// If |num_closures| is 0, |done_closure| is executed immediately.
-//
-// BarrierClosure is thread-safe - the count of remaining closures is
-// maintained as a base::AtomicRefCount. |done_closure| will be run on
-// the thread that calls the final Run() on the returned closures.
-//
-// |done_closure| is also Reset() on the final calling thread but due to the
-// refcounted nature of callbacks, it is hard to know what thread resources
-// will be released on.
-BASE_EXPORT base::Closure BarrierClosure(int num_closures,
-                                         const base::Closure& done_closure);
-
-}  // namespace base
-
-#endif  // BASE_BARRIER_CLOSURE_H_