Revert of Move delay_based_bwe_ into CongestionController

webrtc/modules/congestion_controller/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_CONGESTION_CONTROLLER_TRANSPORT_FEEDBACK_ADAPTER_H_
 #define WEBRTC_MODULES_CONGESTION_CONTROLLER_TRANSPORT_FEEDBACK_ADAPTER_H_
 
+#include <memory>
 #include <vector>
 
 #include "webrtc/base/criticalsection.h"
 #include "webrtc/base/thread_annotations.h"
 #include "webrtc/base/thread_checker.h"
+#include "webrtc/modules/congestion_controller/delay_based_bwe.h"
+#include "webrtc/modules/include/module_common_types.h"
 #include "webrtc/modules/remote_bitrate_estimator/include/send_time_history.h"
-#include "webrtc/system_wrappers/include/clock.h"
 
 namespace webrtc {
 
-namespace rtcp {
-class TransportFeedback;
-}  // namespace rtcp
+class BitrateController;
+class RtcEventLog;
+class ProcessThread;
 
-class TransportFeedbackAdapter {
+class TransportFeedbackAdapter : public TransportFeedbackObserver,
+                                 public CallStatsObserver {
  public:
-  explicit TransportFeedbackAdapter(Clock* clock);
+  TransportFeedbackAdapter(RtcEventLog* event_log,
+                           Clock* clock,
+                           BitrateController* bitrate_controller);
   virtual ~TransportFeedbackAdapter();
 
+  void InitBwe();
+  // Implements TransportFeedbackObserver.
   void AddPacket(uint16_t sequence_number,
                  size_t length,
-                 const PacedPacketInfo& pacing_info);
+                 const PacedPacketInfo& pacing_info) override;
   void OnSentPacket(uint16_t sequence_number, int64_t send_time_ms);
 
   // TODO(holmer): This method should return DelayBasedBwe::Result so that we
   // can get rid of the dependency on BitrateController. Requires changes
   // to the CongestionController interface.
-  void OnTransportFeedback(const rtcp::TransportFeedback& feedback);
-  std::vector<PacketFeedback> GetTransportFeedbackVector() const;
+  void OnTransportFeedback(const rtcp::TransportFeedback& feedback) override;
+  std::vector<PacketFeedback> GetTransportFeedbackVector() const override;
 
+  // Implements CallStatsObserver.
+  void OnRttUpdate(int64_t avg_rtt_ms, int64_t max_rtt_ms) override;
+
+  void SetStartBitrate(int start_bitrate_bps);
+  void SetMinBitrate(int min_bitrate_bps);
   void SetTransportOverhead(int transport_overhead_bytes_per_packet);
 
+  int64_t GetProbingIntervalMs() const;
+
   void ClearSendTimeHistory();
 
  private:
   std::vector<PacketFeedback> GetPacketFeedbackVector(
       const rtcp::TransportFeedback& feedback);
 
   const bool send_side_bwe_with_overhead_;
   rtc::CriticalSection lock_;
+  rtc::CriticalSection bwe_lock_;
   int transport_overhead_bytes_per_packet_ GUARDED_BY(&lock_);
   SendTimeHistory send_time_history_ GUARDED_BY(&lock_);
-  const Clock* const clock_;
+  std::unique_ptr<DelayBasedBwe> delay_based_bwe_ GUARDED_BY(&bwe_lock_);
+  RtcEventLog* const event_log_;
+  Clock* const clock_;
   int64_t current_offset_ms_;
   int64_t last_timestamp_us_;
+  BitrateController* const bitrate_controller_;
   std::vector<PacketFeedback> last_packet_feedback_vector_;
 };
 
 }  // namespace webrtc
 
 #endif  // WEBRTC_MODULES_CONGESTION_CONTROLLER_TRANSPORT_FEEDBACK_ADAPTER_H_