A third_party remote for third_party/mockito/src is corrupt. Run
`git remote prune origin` in the checkout directory before syncing
Chromium.
Thanks to slan@ for providing this fix.
TBR=kjellander@webrtc.org
BUG=chromium:644722
NOTRY=True
Review-Url: https://codereview.webrtc.org/2326523002
Cr-Commit-Position: refs/heads/master@{#14138}