Log an error in RtpDemuxer::FindSsrcAssociations() if kMaxProcessedSsrcs exceeded

webrtc/call/rtp_demuxer.h

Index: webrtc/call/rtp_demuxer.h
diff --git a/webrtc/call/rtp_demuxer.h b/webrtc/call/rtp_demuxer.h
index a5ba889a039b83a85a496acae20edf068fac23ed..6a4370d73163573246b61f2b1179c12af1e2a4f0 100644
--- a/webrtc/call/rtp_demuxer.h
+++ b/webrtc/call/rtp_demuxer.h
@@ -70,6 +70,9 @@ class RtpDemuxer {
   // check RSIDs for the first packet on each incoming SSRC stream.
   // (If RSID associations are added later, we check again.)
   std::set<uint32_t> processed_ssrcs_;
+
+  // Avoid an attack that would create excessive logging.
+  bool logged_max_processed_ssrcs_exceeded_ = false;
 };
 
 }  // namespace webrtc