Coming out of an email thread, it looks like both webrtc_git and webrtc_rev have been used to specify webrtc revisions in uploads, the latter is specified by the recipe.
The dashboard revision config only had entries for webrtc_git until recently, when I added one for webrtc_rev to get the revisions showing but we should only have 1 key instead of the 2. Proposal is to use webrtc_git going forward, since anybody who used that would have seen their revision data and anybody who used webrtc_rev would never had it work.
We can support both for now, but ideally we go back at some point and migrate the webrtc_rev -> webrtc_git and remove the entry from the revision config.
Comment 1 by eyaich@chromium.org
, Mar 26 2018