GitLab

Add Generate DIR_METADATA files and remove metadata from OWNERS
files for //headless.

R=irisu@chromium.org

Bug: 1113033
Change-Id: I5422ec3d1fc43125fe06823aea4e9ce2ff7fede1
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2454383
Commit-Queue: Andrey Kosyakov <caseq@chromium.org>
Reviewed-by: Andrey Kosyakov <caseq@chromium.org>
Auto-Submit: Edward Lesmes <ehmaldonado@chromium.org>
Cr-Commit-Position: refs/heads/master@{#815407}