GitLab

Generate DIR_METADATA files and remove metadata from OWNERS
files for directories under //third_party/.

R=haraken@chromium.org

Bug: 1113033
Change-Id: I2f74cd06d628685f7b9daa7981b86de73f34cb18
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2572726
Auto-Submit: Gavin Mak <gavinmak@google.com>
Commit-Queue: Kentaro Hara <haraken@chromium.org>
Reviewed-by: Kentaro Hara <haraken@chromium.org>
Cr-Commit-Position: refs/heads/master@{#833533}