Add ability to set RTCP sender ssrc at construction time

Bug: webrtc:10774
Change-Id: Iaf5857e24359e9795434bcd0cdbe1658a2f9f5d3
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/144632
Reviewed-by: Åsa Persson <asapersson@webrtc.org>
Commit-Queue: Erik Språng <sprang@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#28506}
diff --git a/modules/rtp_rtcp/source/rtp_rtcp_impl.cc b/modules/rtp_rtcp/source/rtp_rtcp_impl.cc
index aa50227..765f76f 100644
--- a/modules/rtp_rtcp/source/rtp_rtcp_impl.cc
+++ b/modules/rtp_rtcp/source/rtp_rtcp_impl.cc
@@ -61,16 +61,7 @@
 }
 
 ModuleRtpRtcpImpl::ModuleRtpRtcpImpl(const Configuration& configuration)
-    : rtcp_sender_(configuration.audio,
-                   configuration.clock,
-                   configuration.receive_statistics,
-                   configuration.rtcp_packet_type_counter_observer,
-                   configuration.event_log,
-                   configuration.outgoing_transport,
-                   configuration.rtcp_report_interval_ms > 0
-                       ? configuration.rtcp_report_interval_ms
-                       : (configuration.audio ? kDefaultAudioReportInterval
-                                              : kDefaultVideoReportInterval)),
+    : rtcp_sender_(configuration),
       rtcp_receiver_(configuration.clock,
                      configuration.receiver_only,
                      configuration.rtcp_packet_type_counter_observer,