Fix perf issue when timinig out receivers infos in RTCP.

webrtc/modules/rtp_rtcp/source/rtp_rtcp_impl.cc

Index: webrtc/modules/rtp_rtcp/source/rtp_rtcp_impl.cc
diff --git a/webrtc/modules/rtp_rtcp/source/rtp_rtcp_impl.cc b/webrtc/modules/rtp_rtcp/source/rtp_rtcp_impl.cc
index 3c986e98c210e62bc171c98b13be4c6b1c51b0d9..e0bcebda158d2beaf3b22fec6b592d6a54d845a7 100644
--- a/webrtc/modules/rtp_rtcp/source/rtp_rtcp_impl.cc
+++ b/webrtc/modules/rtp_rtcp/source/rtp_rtcp_impl.cc
@@ -211,7 +211,7 @@ void ModuleRtpRtcpImpl::Process() {
   if (rtcp_sender_.TimeToSendRTCPReport())
     rtcp_sender_.SendRTCP(GetFeedbackState(), kRtcpReport);
 
-  if (UpdateRTCPReceiveInformationTimers()) {
+  if (TMMBR() && rtcp_receiver_.UpdateRTCPReceiveInformationTimers()) {
     // A receiver has timed out.
     rtcp_receiver_.UpdateTmmbr();
   }
@@ -867,12 +867,6 @@ bool ModuleRtpRtcpImpl::LastReceivedNTP(
   return true;
 }
 
-bool ModuleRtpRtcpImpl::UpdateRTCPReceiveInformationTimers() {
-  // If this returns true this channel has timed out.
-  // Periodically check if this is true and if so call UpdateTMMBR.
-  return rtcp_receiver_.UpdateRTCPReceiveInformationTimers();
-}
-
 // Called from RTCPsender.
 std::vector<rtcp::TmmbItem> ModuleRtpRtcpImpl::BoundingSet(bool* tmmbr_owner) {
   return rtcp_receiver_.BoundingSet(tmmbr_owner);