Reduce usage of tmmbr information structure

webrtc/modules/rtp_rtcp/source/rtcp_receiver.h

Index: webrtc/modules/rtp_rtcp/source/rtcp_receiver.h
diff --git a/webrtc/modules/rtp_rtcp/source/rtcp_receiver.h b/webrtc/modules/rtp_rtcp/source/rtcp_receiver.h
index c00e7ee793d100f875fa20b72be0291235efd910..1d692944a2d58f77ddb7d6f37201a15187e15489 100644
--- a/webrtc/modules/rtp_rtcp/source/rtcp_receiver.h
+++ b/webrtc/modules/rtp_rtcp/source/rtcp_receiver.h
@@ -131,7 +131,10 @@ class RTCPReceiver {
   void TriggerCallbacksFromRtcpPacket(
       const PacketInformation& packet_information);
 
-  void CreateTmmbrInformation(uint32_t remote_ssrc)
+  TmmbrInformation* CreateTmmbrInformation(uint32_t remote_ssrc)
+      EXCLUSIVE_LOCKS_REQUIRED(rtcp_receiver_lock_);
+  // Update TmmbrInformation (if present) is alive.
+  void UpdateTmmbrRemoteIsAlive(uint32_t remote_ssrc)
       EXCLUSIVE_LOCKS_REQUIRED(rtcp_receiver_lock_);
   TmmbrInformation* GetTmmbrInformation(uint32_t remote_ssrc)
       EXCLUSIVE_LOCKS_REQUIRED(rtcp_receiver_lock_);