Add a PacketOptions struct to webrtc::Transport.

webrtc/test/direct_transport.cc

Index: webrtc/test/direct_transport.cc
diff --git a/webrtc/test/direct_transport.cc b/webrtc/test/direct_transport.cc
index d0f797cb30f7fd4d44538343e6cbaebaf58c93c0..1f92e92357c105f7ffaa8d60cdce031502cb4895 100644
--- a/webrtc/test/direct_transport.cc
+++ b/webrtc/test/direct_transport.cc
@@ -57,7 +57,9 @@ void DirectTransport::SetReceiver(PacketReceiver* receiver) {
   fake_network_.SetReceiver(receiver);
 }
 
-bool DirectTransport::SendRtp(const uint8_t* data, size_t length) {
+bool DirectTransport::SendRtp(const uint8_t* data,
+                              size_t length,
+                              const PacketOptions& options) {
   fake_network_.SendPacket(data, length);
   packet_event_->Set();
   return true;