GitLab

Generate DIR_METADATA files
and remove metadata from OWNERS files
for //build.

Bug: 1113033
Change-Id: I9cf7592a3247c2a25990768644f7a699f2dac80c
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2438475Reviewed-by: Dirk Pranke <dpranke@google.com>
Commit-Queue: Norman Rosas <normando@google.com>
Cr-Commit-Position: refs/heads/master@{#812202}