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: I2e2565001ef3ff58929c0473aac9f0fce81b6632
Reviewed-on: https://chromium-review.googlesource.com/259849
Reviewed-by: Ilja Friedel <ihf@chromium.org>
Tested-by: Ilja Friedel <ihf@chromium.org>
1 file changed