Forgot to negate. Oops.

Bug: chromium:906893
Change-Id: I6e7a5a87e8c513795cc598314c9f0a34e9389e69
Reviewed-on: https://chromium-review.googlesource.com/c/1342919Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Commit-Queue: Jaroslav Sevcik <jarin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#57626}