GitLab

The new implementations have been live for a bit more than a milestone.
It's safe now to delete the old ones.

TBR=jam@chromium.org

Bug: 806366
Change-Id: Icde37e386f975dcc0cee70c17ef482191e74ceba
Reviewed-on: https://chromium-review.googlesource.com/1137453
Commit-Queue: Yuri Wiitala <miu@chromium.org>
Reviewed-by: John Abd-El-Malek <jam@chromium.org>
Reviewed-by: Xiangjun Zhang <xjz@chromium.org>
Cr-Commit-Position: refs/heads/master@{#575451}