Kári Tristan Helgason 0a0a2f12b3 Add back key for AGC field trial.
It seems it got lost in a rebase with this CL:
https://codereview.webrtc.org/2893843003/

Bug: None
Change-Id: Iaf4952593c1a1a9490d31c595b05ab155c0a809e
Reviewed-on: https://chromium-review.googlesource.com/519167
Reviewed-by: Magnus Jedvert <magjed@webrtc.org>
Reviewed-by: Per Åhgren <peah@webrtc.org>
Commit-Queue: Kári Tristan Helgason <kthelgason@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#18353}
2017-05-31 14:04:00 +00:00
..
2017-05-31 14:04:00 +00:00