GitLab

Hides Play Store in Demo Mode by default, because it doesn't show the
right view yet.

To test Play Store in Demo Mode after this CL, use the flag:
  --show-play-in-demo-mode

Bug: 885370
Change-Id: I7119a208742caf3fd2884ac73176a9bbc19a2bde
Reviewed-on: https://chromium-review.googlesource.com/c/1277841Reviewed-by: Steven Bennetts <stevenjb@chromium.org>
Reviewed-by: Hidehiko Abe <hidehiko@chromium.org>
Reviewed-by: Yury Khmel <khmel@chromium.org>
Commit-Queue: Michael Giuffrida <michaelpg@chromium.org>
Cr-Commit-Position: refs/heads/master@{#600120}