Reland of Unify rtcp packet setters

webrtc/modules/rtp_rtcp/source/rtcp_packet/tmmbr.cc

 /*
  *  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 53 matching lines @@
   size_t number_of_items = items_size_bytes / TmmbItem::kLength;
   items_.resize(number_of_items);
   for (TmmbItem& item : items_) {
     if (!item.Parse(next_item))
       return false;
     next_item += TmmbItem::kLength;
   }
   return true;
 }
 
-void Tmmbr::WithTmmbr(const TmmbItem& item) {
+void Tmmbr::AddTmmbr(const TmmbItem& item) {
   items_.push_back(item);
 }
 
 bool Tmmbr::Create(uint8_t* packet,
                    size_t* index,
                    size_t max_length,
                    RtcpPacket::PacketReadyCallback* callback) const {
   RTC_DCHECK(!items_.empty());
   while (*index + BlockLength() > max_length) {
     if (!OnBufferFull(packet, index, callback))
       return false;
   }
   const size_t index_end = *index + BlockLength();
 
   CreateHeader(kFeedbackMessageType, kPacketType, HeaderLength(), packet,
                index);
   RTC_DCHECK_EQ(0u, Rtpfb::media_ssrc());
   CreateCommonFeedback(packet + *index);
   *index += kCommonFeedbackLength;
   for (const TmmbItem& item : items_) {
     item.Create(packet + *index);
     *index += TmmbItem::kLength;
   }
   RTC_CHECK_EQ(index_end, *index);
   return true;
 }
 }  // namespace rtcp
 }  // namespace webrtc