GitLab

https://boringssl.googlesource.com/boringssl/+log/12fe1b25ead258858309d22ffa9e1f9a316358d7..ac8302a092e8e232dbabf5a01eff5dd37671b5c8

Also add a script to do the roll so I don't forget to update build files.

BUG=none

Review URL: https://codereview.chromium.org/1321793002

Cr-Commit-Position: refs/heads/master@{#346841}