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//
// Copyright 2021 Google, Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at:
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
#pragma once
#include <base/observer_list.h>
namespace btbase {
#if defined(BASE_VER) && BASE_VER > 780000
// Checked Observers aren't supported in the older libchrome so use unchecked
// ones instead to preserve behavior.
template <class ObserverType>
class AbstractObserverList
: public base::ObserverList<ObserverType>::Unchecked {};
#else
template <class ObserverType>
class AbstractObserverList : public base::ObserverList<ObserverType> {};
#endif
} // namespace btbase
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