This is to fix https://crbug.com/1288639#c5

Bug: 1288639
Change-Id: Ife224fb5d5fe4faa4a78785828d4fa488fda3c6e
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/tools/depot_tools/+/3403475
Commit-Queue: Takuto Ikuta <tikuta@chromium.org>
Auto-Submit: Takuto Ikuta <tikuta@chromium.org>
Reviewed-by: Fumitoshi Ukai <ukai@google.com>
Commit-Queue: Fumitoshi Ukai <ukai@google.com>