This will be used in ChromeOS build_packages.

Bug: b/242680623, b/203606263
Change-Id: I3eedec7b245405c24091db43a450181a270d1305
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/tools/depot_tools/+/3833266Reviewed-by: Fumitoshi Ukai <ukai@google.com>
Commit-Queue: Takuto Ikuta <tikuta@chromium.org>