Revert of Unify rtcp packet setters

webrtc/modules/rtp_rtcp/source/rtcp_packet/receiver_report.h

Index: webrtc/modules/rtp_rtcp/source/rtcp_packet/receiver_report.h
diff --git a/webrtc/modules/rtp_rtcp/source/rtcp_packet/receiver_report.h b/webrtc/modules/rtp_rtcp/source/rtcp_packet/receiver_report.h
index 2bfe174c50ec60c1178657f740cb265bc75d2ec0..0630adbac244a4d48929b962add8c004d110a3f0 100644
--- a/webrtc/modules/rtp_rtcp/source/rtcp_packet/receiver_report.h
+++ b/webrtc/modules/rtp_rtcp/source/rtcp_packet/receiver_report.h
@@ -32,8 +32,8 @@
   // Parse assumes header is already parsed and validated.
   bool Parse(const CommonHeader& packet);
 
-  void SetSenderSsrc(uint32_t ssrc) { sender_ssrc_ = ssrc; }
-  bool AddReportBlock(const ReportBlock& block);
+  void From(uint32_t ssrc) { sender_ssrc_ = ssrc; }
+  bool WithReportBlock(const ReportBlock& block);
 
   uint32_t sender_ssrc() const { return sender_ssrc_; }
   const std::vector<ReportBlock>& report_blocks() const {