Refactor rtcp statistics: Rtcp module take narrow interface

webrtc/modules/rtp_rtcp/source/rtcp_packet/sender_report.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 24 matching lines @@
   void SetNtp(NtpTime ntp) { ntp_ = ntp; }
   void SetRtpTimestamp(uint32_t rtp_timestamp) {
     rtp_timestamp_ = rtp_timestamp;
   }
   void SetPacketCount(uint32_t packet_count) {
     sender_packet_count_ = packet_count;
   }
   void SetOctetCount(uint32_t octet_count) {
     sender_octet_count_ = octet_count;
   }
+  bool SetReportBlocks(std::vector<ReportBlock> blocks);
   bool AddReportBlock(const ReportBlock& block);
   void ClearReportBlocks() { report_blocks_.clear(); }
 
   uint32_t sender_ssrc() const { return sender_ssrc_; }
   NtpTime ntp() const { return ntp_; }
   uint32_t rtp_timestamp() const { return rtp_timestamp_; }
   uint32_t sender_packet_count() const { return sender_packet_count_; }
   uint32_t sender_octet_count() const { return sender_octet_count_; }
 
   const std::vector<ReportBlock>& report_blocks() const {
@@ skipping 15 matching lines @@
   NtpTime ntp_;
   uint32_t rtp_timestamp_;
   uint32_t sender_packet_count_;
   uint32_t sender_octet_count_;
   std::vector<ReportBlock> report_blocks_;
 };
 
 }  // namespace rtcp
 }  // namespace webrtc
 #endif  // WEBRTC_MODULES_RTP_RTCP_SOURCE_RTCP_PACKET_SENDER_REPORT_H_