Replace rtcp packet parsing in the RtcpReceiver.

webrtc/modules/rtp_rtcp/source/rtcp_receiver_help.h

 /*
  *  Copyright (c) 2012 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 30 matching lines @@
   int64_t maxRTT;
   int64_t avgRTT;
   uint32_t numAverageCalcs;
 };
 
 class RTCPPacketInformation {
  public:
   RTCPPacketInformation();
   ~RTCPPacketInformation();
 
-  void AddNACKPacket(const uint16_t packetID);
-  void ResetNACKPacketIdArray();
-
   void AddReportInfo(const RTCPReportBlockInformation& report_block_info);
 
   uint32_t rtcpPacketTypeFlags;  // RTCPPacketTypeFlags bit field
   uint32_t remoteSSRC;
 
   std::vector<uint16_t> nackSequenceNumbers;
 
   ReportBlockList report_blocks;
   int64_t rtt;
 
@@ skipping 43 matching lines @@
     int64_t last_updated_ms;
   };
 
   std::map<uint32_t, TimedTmmbrItem> tmmbr_;
 };
 
 }  // end namespace RTCPHelp
 }  // namespace webrtc
 
 #endif  // WEBRTC_MODULES_RTP_RTCP_SOURCE_RTCP_RECEIVER_HELP_H_