Work around wflinfo breaking tests on freon.

This was broken due to using platform_null.
https://chromium-review.googlesource.com/#/c/243785/

BUG=chromium:463178
TEST=Ran on Pixel.

Change-Id: Ice993c44390cf5ff903f97af4551e917dba2ce69
Reviewed-on: https://chromium-review.googlesource.com/259940
Reviewed-by: Daniel Kurtz <djkurtz@chromium.org>
Commit-Queue: Ilja Friedel <ihf@chromium.org>
Trybot-Ready: Ilja Friedel <ihf@chromium.org>
Tested-by: Ilja Friedel <ihf@chromium.org>
1 file changed