Providing unique identifiers for files and directories created as part
of unit tests.
Bug: webrtc:15833
Change-Id: If2835c362c47a111aa99b0e3c6ad6a33be061978
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/338260
Reviewed-by: Mirko Bonadei <mbonadei@webrtc.org>
Reviewed-by: Harald Alvestrand <hta@webrtc.org>
Commit-Queue: Mirko Bonadei <mbonadei@webrtc.org>
Cr-Commit-Position: refs/heads/main@{#41704}