GitLab

This target packages output artifacts into a format that the
Cast internal build infrastructure expects.

Bug: Internal b/143701141
Test: build atv and udon with internal patch
Change-Id: I38bab1bdffbb2cb78ae503f554def458f296ab41
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1894831Reviewed-by: Yuchen Liu <yucliu@chromium.org>
Commit-Queue: Simeon Anfinrud <sanfin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#712185}