Add a PacketOptions struct to webrtc::Transport.

webrtc/test/channel_transport/udp_transport_impl.cc

Index: webrtc/test/channel_transport/udp_transport_impl.cc
diff --git a/webrtc/test/channel_transport/udp_transport_impl.cc b/webrtc/test/channel_transport/udp_transport_impl.cc
index f66f4ef29d8158e609d5091d093cce5f22c45cf4..a530ec6f0cb886d8cb7a528bdaf09c532b16349c 100644
--- a/webrtc/test/channel_transport/udp_transport_impl.cc
+++ b/webrtc/test/channel_transport/udp_transport_impl.cc
@@ -1931,7 +1931,9 @@ int32_t UdpTransportImpl::SendRTCPPacketTo(const int8_t* data,
     return -1;
 }
 
-bool UdpTransportImpl::SendRtp(const uint8_t* data, size_t length) {
+bool UdpTransportImpl::SendRtp(const uint8_t* data,
+                               size_t length,
+                               const PacketOptions& packet_options) {
     WEBRTC_TRACE(kTraceStream, kTraceTransport, _id, "%s", __FUNCTION__);
 
     CriticalSectionScoped cs(_crit);