Refactor NACK bitrate allocation

webrtc/video/send_statistics_proxy.h

 /*
  *  Copyright (c) 2013 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.
  */
 
@@ skipping 68 matching lines @@
   void CNameChanged(const char* cname, uint32_t ssrc) override;
   // From RtcpPacketTypeCounterObserver.
   void RtcpPacketTypesCounterUpdated(
       uint32_t ssrc,
       const RtcpPacketTypeCounter& packet_counter) override;
   // From StreamDataCountersCallback.
   void DataCountersUpdated(const StreamDataCounters& counters,
                            uint32_t ssrc) override;
 
   // From BitrateStatisticsObserver.
-  void Notify(const BitrateStatistics& total_stats,
-              const BitrateStatistics& retransmit_stats,
+  void Notify(uint32_t total_bitrate_bps,
+              uint32_t retransmit_bitrate_bps,
               uint32_t ssrc) override;
 
   // From FrameCountObserver.
   void FrameCountUpdated(const FrameCounts& frame_counts,
                          uint32_t ssrc) override;
 
   void SendSideDelayUpdated(int avg_delay_ms,
                             int max_delay_ms,
                             uint32_t ssrc) override;
 
@@ skipping 80 matching lines @@
     const VideoSendStream::Stats start_stats_;
     std::map<int, QpCounters>
         qp_counters_;  // QP counters mapped by spatial idx.
   };
 
   std::unique_ptr<UmaSamplesContainer> uma_container_ GUARDED_BY(crit_);
 };
 
 }  // namespace webrtc
 #endif  // WEBRTC_VIDEO_SEND_STATISTICS_PROXY_H_