GitLab

Attempting to reland
https://chromium-review.googlesource.com/c/chromium/src/+/722067

Differences include: Not changing --id to --bot, removing the sys.executable as an argument to the subprocess, and changing --dump_json to --dump-json

BUG=chromium:758632

Change-Id: I91bad09256a7e87972c448039c89e308ee5db7f5
Reviewed-on: https://chromium-review.googlesource.com/747074Reviewed-by: Ned Nguyen <nednguyen@google.com>
Reviewed-by: Stephen Martinis <martiniss@chromium.org>
Commit-Queue: Ashley Enstad <ashleymarie@chromium.org>
Cr-Commit-Position: refs/heads/master@{#512909}