Adding strong types went a little too far as these two types represent the same sequence number. A "request sequence number" is a number, that - when responded to - will be used as "response sequence number". Having them separate added confusion and just a lot of type-casting. Bug: webrtc:12614 Change-Id: I4636ea8f2252023a2d5a9b7033763e1978b1812e Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/214130 Commit-Queue: Victor Boivie <boivie@webrtc.org> Reviewed-by: Florent Castelli <orphis@webrtc.org> Cr-Commit-Position: refs/heads/master@{#33789}