We should have done this a long time ago.
Let's do the same for stats_types.h in a separate CL because that file
is part of the api/ folder and needs some special care (typedefs and
temporarily include helper to avoid breaking downstream projects).
Bug: webrtc:14180
Change-Id: Id9c71ebd53dd97dd238bdf7527c36d7cf0e91f85
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/267642
Reviewed-by: Harald Alvestrand <hta@webrtc.org>
Commit-Queue: Henrik Boström <hbos@webrtc.org>
Cr-Commit-Position: refs/heads/main@{#37426}
