Adding the missing test for https://chromium-review.googlesource.com/c/603717.

Bug: chromium:752722
Change-Id: I8a4ca161b691532e481ebe9f7d05c306beb4c90a
Reviewed-on: https://chromium-review.googlesource.com/604792Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Commit-Queue: Benedikt Meurer <bmeurer@chromium.org>
Cr-Commit-Position: refs/heads/master@{#47212}