webrtc/api/stats/OWNERS file added.

hbos and hta are already OWNERS of webrtc/stats/ and of rtcstats* files
(per-file rtcstats*=) in webrtc/api/. When the webrtc/api/stats/ folder
was created we forgot to add this OWNERS file (per-file OWNERS does not
apply to subfolders apparently).

BUG=chromium:627816
NOTRY=True

Review-Url: https://codereview.webrtc.org/2392633002
Cr-Original-Commit-Position: refs/heads/master@{#14482}
Cr-Mirrored-From: https://chromium.googlesource.com/external/webrtc
Cr-Mirrored-Commit: 07a224b2fa202c101ff65e6666b555800fee87a7
1 file changed