This moves it from an API directory (system_wrappers/include/) to a
non-API directory, which is exactly what we want for utilities like
this.
Bug: webrtc:8445
NOPRESUBMIT=true
Change-Id: I30d01fcb9cbe1427a7703a3cdd7befae751066b5
Reviewed-on: https://webrtc-review.googlesource.com/21982
Commit-Queue: Karl Wiberg <kwiberg@webrtc.org>
Reviewed-by: Henrik Lundin <henrik.lundin@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#22550}