GitLab

It's still in //crypto, but now it's a bit more self-contained.

Bug: 125848
Change-Id: I8596aa9f66630625234206986636edcb29853c73
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1857046
Commit-Queue: David Benjamin <davidben@chromium.org>
Reviewed-by: Matt Mueller <mattm@chromium.org>
Cr-Commit-Position: refs/heads/master@{#706202}