Bug: 1339472

Change-Id: If97d2fad7e5c61ec907e15a00db225b653a62bef
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/tools/depot_tools/+/3738365Reviewed-by: Gavin Mak <gavinmak@google.com>
Commit-Queue: Joanna Wang <jojwang@chromium.org>