Verify sender ssrc when receiving rtcp target bitrate

webrtc/modules/rtp_rtcp/source/rtcp_receiver.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 148 matching lines @@
       EXCLUSIVE_LOCKS_REQUIRED(rtcp_receiver_lock_);
 
   void HandleXrReceiveReferenceTime(uint32_t sender_ssrc,
                                     const rtcp::Rrtr& rrtr)
       EXCLUSIVE_LOCKS_REQUIRED(rtcp_receiver_lock_);
 
   void HandleXrDlrrReportBlock(const rtcp::ReceiveTimeInfo& rti)
       EXCLUSIVE_LOCKS_REQUIRED(rtcp_receiver_lock_);
 
   void HandleXrTargetBitrate(const rtcp::TargetBitrate& target_bitrate,
+                             uint32_t ssrc,

[danilchap, 2017/08/23 10:33:55]

for consistency with HandleXrReceiveReferenceTime may be
put it as first parameter and name it sender_ssrc

[sprang_webrtc, 2017/08/23 10:38:11]

Done.

                              PacketInformation* packet_information)
       EXCLUSIVE_LOCKS_REQUIRED(rtcp_receiver_lock_);
 
   void HandleNack(const rtcp::CommonHeader& rtcp_block,
                   PacketInformation* packet_information)
       EXCLUSIVE_LOCKS_REQUIRED(rtcp_receiver_lock_);
 
   void HandleBye(const rtcp::CommonHeader& rtcp_block)
       EXCLUSIVE_LOCKS_REQUIRED(rtcp_receiver_lock_);
 
@@ skipping 76 matching lines @@
   RtcpPacketTypeCounterObserver* const packet_type_counter_observer_;
   RtcpPacketTypeCounter packet_type_counter_;
 
   RtcpNackStats nack_stats_;
 
   size_t num_skipped_packets_;
   int64_t last_skipped_packets_warning_ms_;
 };
 }  // namespace webrtc
 #endif  // WEBRTC_MODULES_RTP_RTCP_SOURCE_RTCP_RECEIVER_H_