GitLab

crrev.com/c/2616981 started to exclude system page from Lacros,
but there seems a missing check in the CL. This CL is its follow up.

Bug: 1166000
Test: Built locally.
Change-Id: Ic3d6b4b49f2a3673abf6efe6202716e7c8592631
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2626850
Auto-Submit: Hidehiko Abe <hidehiko@chromium.org>
Reviewed-by: dpapad <dpapad@chromium.org>
Commit-Queue: Hidehiko Abe <hidehiko@chromium.org>
Cr-Commit-Position: refs/heads/master@{#842958}