Cast: Avoid retransmit if we sent the same packet recently (less than RTT)

chrome/renderer/media/cast_transport_sender_ipc.cc

Index: chrome/renderer/media/cast_transport_sender_ipc.cc
diff --git a/chrome/renderer/media/cast_transport_sender_ipc.cc b/chrome/renderer/media/cast_transport_sender_ipc.cc
index 1133cfbe44329f6904b4586aad7bdfcfd7c33657..0925349e89a5356a61de0588df16ca4395f37d0a 100644
--- a/chrome/renderer/media/cast_transport_sender_ipc.cc
+++ b/chrome/renderer/media/cast_transport_sender_ipc.cc
@@ -79,11 +79,13 @@ void CastTransportSenderIPC::SendRtcpFromRtpSender(
 void CastTransportSenderIPC::ResendPackets(
     bool is_audio,
     const media::cast::MissingFramesAndPacketsMap& missing_packets,
-    bool cancel_rtx_if_not_in_list) {
+    bool cancel_rtx_if_not_in_list,
+    base::TimeDelta rtt) {
   Send(new CastHostMsg_ResendPackets(channel_id_,
                                      is_audio,
                                      missing_packets,
-                                     cancel_rtx_if_not_in_list));
+                                     cancel_rtx_if_not_in_list,
+                                     rtt));
 }
 
 void CastTransportSenderIPC::OnReceivedPacket(