Using tempfile is probably overkill in this case, but it is good to
have a meaningful path printed out in case of error (instead of
something like "/tmp" and then a Windows path).
Bug: None
Change-Id: I90b939d7b2a082f4c04f995b602942efe1e671bc
Reviewed-on: https://webrtc-review.googlesource.com/81180
Reviewed-by: Patrik Höglund <phoglund@webrtc.org>
Commit-Queue: Mirko Bonadei <mbonadei@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#23516}