Reland "CQ config: add gerrit CQAbility verifier."

This reverts commit 02241e976b34c8bc4b2d4add2f0c881d8a8d2bc1.

Reason for revert: cq proto has been rolled to depot_tools.

Original change's description:
> Revert "CQ config: add gerrit CQAbility verifier."
> 
> This reverts commit 04628221324eb2e5b329a8fd9c69196ea9acb43c.
> 
> Reason for revert: Lets revert until the proto is rolled into Skia.
> 
> Original change's description:
> > CQ config: add gerrit CQAbility verifier.
> > 
> > Goal is to ensure that unreviewed and untrusted code isn't sent through
> > CQ to try bots, by accident or through malicious intent.
> > 
> > R=​rmistry@google.com
> > BUG=chromium:692613
> > NOTRY=True
> > 
> > Change-Id: I750be91895f5b77229b8f4a22216f00eaa75f7a0
> > Reviewed-on: https://skia-review.googlesource.com/8620
> > Reviewed-by: Ravi Mistry <rmistry@google.com>
> > Commit-Queue: Ravi Mistry <rmistry@google.com>
> > 
> 
> TBR=rmistry@google.com,reviews@skia.org,tandrii@google.com
> NOPRESUBMIT=true
> NOTREECHECKS=true
> NOTRY=true
> BUG=chromium:692613
> 
> Change-Id: I6d4b821b2a02ef3e097cf68cd8ebfb2b51d4d165
> Reviewed-on: https://skia-review.googlesource.com/8663
> Reviewed-by: Ravi Mistry <rmistry@google.com>
> Commit-Queue: Ravi Mistry <rmistry@google.com>
> 

R=rmistry@google.com,reviews@skia.org,tandrii@google.com
# Not skipping CQ checks because original CL landed > 1 day ago.
BUG=chromium:692613

Change-Id: Icefcd69b4608e5294f358de66a9ce014c9950ede
Reviewed-on: https://skia-review.googlesource.com/8740
Reviewed-by: Ravi Mistry <rmistry@google.com>
Reviewed-by: Eric Boren <borenet@google.com>
Commit-Queue: Ravi Mistry <rmistry@google.com>

0 files changed, 0 insertions, 0 deletions