1*635a8641SAndroid Build Coastguard Worker // Copyright (c) 2011 The Chromium Authors. All rights reserved. 2*635a8641SAndroid Build Coastguard Worker // Use of this source code is governed by a BSD-style license that can be 3*635a8641SAndroid Build Coastguard Worker // found in the LICENSE file. 4*635a8641SAndroid Build Coastguard Worker 5*635a8641SAndroid Build Coastguard Worker #ifndef BASE_CALLBACK_FORWARD_H_ 6*635a8641SAndroid Build Coastguard Worker #define BASE_CALLBACK_FORWARD_H_ 7*635a8641SAndroid Build Coastguard Worker 8*635a8641SAndroid Build Coastguard Worker namespace base { 9*635a8641SAndroid Build Coastguard Worker 10*635a8641SAndroid Build Coastguard Worker template <typename Signature> 11*635a8641SAndroid Build Coastguard Worker class OnceCallback; 12*635a8641SAndroid Build Coastguard Worker 13*635a8641SAndroid Build Coastguard Worker template <typename Signature> 14*635a8641SAndroid Build Coastguard Worker class RepeatingCallback; 15*635a8641SAndroid Build Coastguard Worker 16*635a8641SAndroid Build Coastguard Worker template <typename Signature> 17*635a8641SAndroid Build Coastguard Worker using Callback = RepeatingCallback<Signature>; 18*635a8641SAndroid Build Coastguard Worker 19*635a8641SAndroid Build Coastguard Worker // Syntactic sugar to make Callback<void()> easier to declare since it 20*635a8641SAndroid Build Coastguard Worker // will be used in a lot of APIs with delayed execution. 21*635a8641SAndroid Build Coastguard Worker using OnceClosure = OnceCallback<void()>; 22*635a8641SAndroid Build Coastguard Worker using RepeatingClosure = RepeatingCallback<void()>; 23*635a8641SAndroid Build Coastguard Worker using Closure = Callback<void()>; 24*635a8641SAndroid Build Coastguard Worker 25*635a8641SAndroid Build Coastguard Worker } // namespace base 26*635a8641SAndroid Build Coastguard Worker 27*635a8641SAndroid Build Coastguard Worker #endif // BASE_CALLBACK_FORWARD_H_ 28