Add a PacketOptions struct to webrtc::Transport.

webrtc/test/layer_filtering_transport.h

Index: webrtc/test/layer_filtering_transport.h
diff --git a/webrtc/test/layer_filtering_transport.h b/webrtc/test/layer_filtering_transport.h
index 96a2cba8a232c44f43b72978b024b9d311ddaabd..68994ae38a86edfd4bb9f3fdf3d306eb6e739bac 100644
--- a/webrtc/test/layer_filtering_transport.h
+++ b/webrtc/test/layer_filtering_transport.h
@@ -24,7 +24,9 @@ class LayerFilteringTransport : public test::DirectTransport {
                           uint8_t vp9_video_payload_type,
                           uint8_t tl_discard_threshold,
                           uint8_t sl_discard_threshold);
-  bool SendRtp(const uint8_t* data, size_t length) override;
+  bool SendRtp(const uint8_t* data,
+               size_t length,
+               const PacketOptions& options) override;
 
  private:
   // Used to distinguish between VP8 and VP9.