Add a PacketOptions struct to webrtc::Transport.

webrtc/test/channel_transport/udp_transport_impl.h

Index: webrtc/test/channel_transport/udp_transport_impl.h
diff --git a/webrtc/test/channel_transport/udp_transport_impl.h b/webrtc/test/channel_transport/udp_transport_impl.h
index 80562f35200e70ec975b0175bb228264d47bcdfc..f80ee02d710815d8a34779fdefea0e6d80725c6f 100644
--- a/webrtc/test/channel_transport/udp_transport_impl.h
+++ b/webrtc/test/channel_transport/udp_transport_impl.h
@@ -116,7 +116,9 @@ public:
                              size_t length,
                              uint16_t rtcpPort) override;
     // Transport functions
-    bool SendRtp(const uint8_t* data, size_t length) override;
+    bool SendRtp(const uint8_t* data,
+                 size_t length,
+                 const PacketOptions& packet_options) override;
     bool SendRtcp(const uint8_t* data, size_t length) override;
 
     // UdpTransport functions continue.