Set actual transport overhead in rtp_rtcp

webrtc/call/call.cc

Index: webrtc/call/call.cc
diff --git a/webrtc/call/call.cc b/webrtc/call/call.cc
index 489983e7edc1a353dda18eea4c02608e147267f8..15527989dd2f404589cdf7c0ff4f4cc9e5e1ff08 100644
--- a/webrtc/call/call.cc
+++ b/webrtc/call/call.cc
@@ -678,6 +678,19 @@ void Call::OnNetworkRouteChanged(const std::string& transport_name,
     return;
   }
 
+  {
+    ReadLockScoped read_lock(*send_crit_);
+    for (auto& kv : audio_send_ssrcs_) {
+      kv.second->SetTransportOverhead(
+          network_route.transport_overhead_per_packet);
+    }
+
+    for (auto& kv : video_send_ssrcs_) {
+      kv.second->SetTransportOverhead(
+          network_route.transport_overhead_per_packet);
+    }
+  }
+
   // Check whether the network route has changed on each transport.
   auto result =
       network_routes_.insert(std::make_pair(transport_name, network_route));