Let FlexfecReceiveStreamImpl send RTCP RRs.

webrtc/modules/rtp_rtcp/include/flexfec_receiver.h

 /*
  *  Copyright (c) 2016 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 25 matching lines @@
 class FlexfecReceiver {
  public:
   FlexfecReceiver(uint32_t ssrc,
                   uint32_t protected_media_ssrc,
                   RecoveredPacketReceiver* recovered_packet_receiver);
   ~FlexfecReceiver();
 
   // Inserts a received packet (can be either media or FlexFEC) into the
   // internal buffer, and sends the received packets to the erasure code.
   // All newly recovered packets are sent back through the callback.
-  bool AddAndProcessReceivedPacket(RtpPacketReceived packet);
+  bool AddAndProcessReceivedPacket(const RtpPacketReceived& packet);
 
   // Returns a counter describing the added and recovered packets.
   FecPacketCounter GetPacketCounter() const;
 
  private:
-  bool AddReceivedPacket(RtpPacketReceived packet);
+  bool AddReceivedPacket(const RtpPacketReceived& packet);
   bool ProcessReceivedPackets();
 
   // Config.
   const uint32_t ssrc_;
   const uint32_t protected_media_ssrc_;
 
   // Erasure code interfacing and callback.
   std::unique_ptr<ForwardErrorCorrection> erasure_code_
       GUARDED_BY(sequence_checker_);
   ForwardErrorCorrection::ReceivedPacketList received_packets_
       GUARDED_BY(sequence_checker_);
   ForwardErrorCorrection::RecoveredPacketList recovered_packets_
       GUARDED_BY(sequence_checker_);
   RecoveredPacketReceiver* const recovered_packet_receiver_;
 
   // Logging and stats.
   Clock* const clock_;
   int64_t last_recovered_packet_ms_ GUARDED_BY(sequence_checker_);
   FecPacketCounter packet_counter_ GUARDED_BY(sequence_checker_);
 
   rtc::SequencedTaskChecker sequence_checker_;
 };
 
 }  // namespace webrtc
 
 #endif  // WEBRTC_MODULES_RTP_RTCP_INCLUDE_FLEXFEC_RECEIVER_H_