BUG=chromium:973247

Change-Id: Ibbc10cbefb85b5c9ab7a8092d1ac8d4a16af9e32
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/tools/depot_tools/+/1745892Reviewed-by: Robbie Iannucci <iannucci@chromium.org>
Commit-Queue: Yaakov Shaul <yshaul@chromium.org>