Reset the BWE when the network changes

webrtc/p2p/base/candidatepairinterface.h

 /*
  *  Copyright 2016 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.
  */
 
-#include "webrtc/base/objc/RTCMacros.h"
+#ifndef WEBRTC_P2P_BASE_CANDIDATEPAIRINTERFACE_H_
+#define WEBRTC_P2P_BASE_CANDIDATEPAIRINTERFACE_H_
 
-#import <Foundation/Foundation.h>
+namespace cricket {
 
-typedef NS_OPTIONS(NSUInteger, RTCFieldTrialOptions) {
-  RTCFieldTrialOptionsNone = 0,
-  RTCFieldTrialOptionsSendSideBwe = 1 << 0,
+class Candidate;
+
+class CandidatePairInterface {
+ public:
+  virtual ~CandidatePairInterface() {}
+
+  virtual const Candidate& local_candidate() const = 0;
+  virtual const Candidate& remote_candidate() const = 0;
 };
 
-/** Must be called before any other call into WebRTC. See:
- *  webrtc/system_wrappers/include/field_trial_default.h
- */
-RTC_EXPORT void RTCInitFieldTrials(RTCFieldTrialOptions options);
+}  // namespace cricket
+
+#endif  // WEBRTC_P2P_BASE_CANDIDATEPAIRINTERFACE_H_