GitLab

Rolling this tool just to keep it up-to-date.
Also want to try out new flag in a follow-up:
  --generate_base_classes_for_default_methods

Change-Id: Ia357a27b9ed8064a4adb8abc00ce0c4c601972a1
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1882306
Commit-Queue: Andrew Grieve <agrieve@chromium.org>
Auto-Submit: Andrew Grieve <agrieve@chromium.org>
Reviewed-by: Eric Stevenson <estevenson@chromium.org>
Cr-Commit-Position: refs/heads/master@{#712463}