Revert of Unify rtcp packet setters

webrtc/modules/rtp_rtcp/source/rtcp_packet/tmmbr.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 16 matching lines @@
 class Tmmbr : public Rtpfb {
  public:
   static constexpr uint8_t kFeedbackMessageType = 3;
 
   Tmmbr() {}
   ~Tmmbr() override {}
 
   // Parse assumes header is already parsed and validated.
   bool Parse(const CommonHeader& packet);
 
-  void AddTmmbr(const TmmbItem& item);
+  void WithTmmbr(const TmmbItem& item);
 
   const std::vector<TmmbItem>& requests() const { return items_; }
 
  protected:
   bool Create(uint8_t* packet,
               size_t* index,
               size_t max_length,
               RtcpPacket::PacketReadyCallback* callback) const override;
 
  private:
   size_t BlockLength() const override {
     return kHeaderLength + kCommonFeedbackLength +
            TmmbItem::kLength * items_.size();
   }
 
   // Media ssrc is unused, shadow base class setter.
-  void SetMediaSsrc(uint32_t ssrc);
+  void To(uint32_t ssrc);
 
   std::vector<TmmbItem> items_;
 
   RTC_DISALLOW_COPY_AND_ASSIGN(Tmmbr);
 };
 }  // namespace rtcp
 }  // namespace webrtc
 #endif  // WEBRTC_MODULES_RTP_RTCP_SOURCE_RTCP_PACKET_TMMBR_H_