1 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4 
5 #ifndef BASE_CALLBACK_FORWARD_H_
6 #define BASE_CALLBACK_FORWARD_H_
7 
8 namespace base {
9 
10 template <typename Sig>
11 class Callback;
12 
13 // Syntactic sugar to make Callback<void()> easier to declare since it
14 // will be used in a lot of APIs with delayed execution.
15 using Closure = Callback<void()>;
16 
17 }  // namespace base
18 
19 #endif  // BASE_CALLBACK_FORWARD_H_
20