This lets us change how many bytes and packets goes into the probes, as well as some other things. Bug: webrtc:10394 Change-Id: I26bb26a644e6f00366e9275228760c8744d63735 Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/128424 Commit-Queue: Jonas Olsson <jonasolsson@webrtc.org> Reviewed-by: Sebastian Jansson <srte@webrtc.org> Cr-Commit-Position: refs/heads/master@{#27312}