| /* | 
 |  *  Copyright 2018 The WebRTC Project Authors. All rights reserved. | 
 |  * | 
 |  *  Use of this source code is governed by a BSD-style license | 
 |  *  that can be found in the LICENSE file in the root of the source | 
 |  *  tree. An additional intellectual property rights grant can be found | 
 |  *  in the file PATENTS.  All contributing project authors may | 
 |  *  be found in the AUTHORS file in the root of the source tree. | 
 |  */ | 
 |  | 
 | #ifndef API_ASYNC_RESOLVER_FACTORY_H_ | 
 | #define API_ASYNC_RESOLVER_FACTORY_H_ | 
 |  | 
 | #include "rtc_base/async_resolver_interface.h" | 
 |  | 
 | namespace webrtc { | 
 |  | 
 | // An abstract factory for creating AsyncResolverInterfaces. This allows | 
 | // client applications to provide WebRTC with their own mechanism for | 
 | // performing DNS resolution. | 
 | class AsyncResolverFactory { | 
 |  public: | 
 |   AsyncResolverFactory() = default; | 
 |   virtual ~AsyncResolverFactory() = default; | 
 |  | 
 |   // The caller should call Destroy on the returned object to delete it. | 
 |   virtual rtc::AsyncResolverInterface* Create() = 0; | 
 | }; | 
 |  | 
 | }  // namespace webrtc | 
 |  | 
 | #endif  // API_ASYNC_RESOLVER_FACTORY_H_ |