GitLab

This flag hasn't been used in code in a while. Delete
some unused code.

Test: local build, no breaks.
Bug: none.
Change-Id: Id642f5c9424332395d5abc5d338bb8fe9fcb602e
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1667607
Commit-Queue: Brett Kilty <brettk@google.com>
Auto-Submit: Brett Kilty <brettk@google.com>
Reviewed-by: Luke Halliwell <halliwell@chromium.org>
Reviewed-by: Sergey Volk <servolk@chromium.org>
Cr-Commit-Position: refs/heads/master@{#682924}