Reland: Fix race / crash in OnNetworkRouteChanged().

webrtc/modules/remote_bitrate_estimator/transport_feedback_adapter.h

-/*
- *  Copyright (c) 2015 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 WEBRTC_MODULES_REMOTE_BITRATE_ESTIMATOR_TRANSPORT_FEEDBACK_ADAPTER_H_
-#define WEBRTC_MODULES_REMOTE_BITRATE_ESTIMATOR_TRANSPORT_FEEDBACK_ADAPTER_H_
-
-#include <memory>
-#include <vector>
-
-#include "webrtc/base/criticalsection.h"
-#include "webrtc/base/thread_annotations.h"
-#include "webrtc/modules/include/module_common_types.h"
-#include "webrtc/modules/remote_bitrate_estimator/include/remote_bitrate_estimator.h"
-#include "webrtc/modules/remote_bitrate_estimator/include/send_time_history.h"
-
-namespace webrtc {
-
-class ProcessThread;
-
-class TransportFeedbackAdapter : public TransportFeedbackObserver,
-                                 public CallStatsObserver {
- public:
-  explicit TransportFeedbackAdapter(Clock* clock);
-  virtual ~TransportFeedbackAdapter();
-
-  void SetBitrateEstimator(RemoteBitrateEstimator* rbe);
-  RemoteBitrateEstimator* GetBitrateEstimator() const {
-    return bitrate_estimator_.get();
-  }
-
-  // Implements TransportFeedbackObserver.
-  void AddPacket(uint16_t sequence_number,
-                 size_t length,
-                 int probe_cluster_id) override;
-  void OnSentPacket(uint16_t sequence_number, int64_t send_time_ms);
-
-  void OnTransportFeedback(const rtcp::TransportFeedback& feedback) override;
-  std::vector<PacketInfo> GetTransportFeedbackVector() const override;
-
-  // Implements CallStatsObserver.
-  void OnRttUpdate(int64_t avg_rtt_ms, int64_t max_rtt_ms) override;
-
- private:
-  std::vector<PacketInfo> GetPacketFeedbackVector(
-      const rtcp::TransportFeedback& feedback);
-
-  rtc::CriticalSection lock_;
-  SendTimeHistory send_time_history_ GUARDED_BY(&lock_);
-  std::unique_ptr<RemoteBitrateEstimator> bitrate_estimator_;
-  Clock* const clock_;
-  int64_t current_offset_ms_;
-  int64_t last_timestamp_us_;
-  std::vector<PacketInfo> last_packet_feedback_vector_;
-};
-
-}  // namespace webrtc
-
-#endif  // WEBRTC_MODULES_REMOTE_BITRATE_ESTIMATOR_TRANSPORT_FEEDBACK_ADAPTER_H_