This CL replaces various int types with DataRata, DataSize, Timestamp
and TimeDelta classes.
This is part of larger refactoring work where most of PacedSender will
be broken out into a class handling the logic and another responsible
for thread handling. Splitting that up for easier reviewing.
Bug: webrtc:10809
Change-Id: If57a238e5090c47bf3a99c2042783ae584b425f1
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/148591
Reviewed-by: Sebastian Jansson <srte@webrtc.org>
Commit-Queue: Erik Språng <sprang@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#28835}
82d75a6214