[Merge-M54] arc: Prevent showing Arc app window for secondary user profile.

[Merge-M54] arc: Prevent showing Arc app window for secondary user profile.

Arc has a limitation to be visible for primary profile only. However,
there are situations when Arc task can be started while the secondary
profile is shown. Before this led to case when Arc window was shown,
which is unexpected. This CL fixes this issue and prevents showing Arc
window for non-primary profiles.

Test=Manually on the device. Start Arc app in deferred mode and switch
     to the secondary profile fast. Arc app is started but window is not
     shown. Switch back to primary profile and window is automatically
     restored there.
BUG=b/31500778
BUG=647379
BUG=644751
TBR=reviewer@chromium.org
NOTRY=true
NOPRESUBMIT=true

Review-Url: https://codereview.chromium.org/2345043002
Cr-Commit-Position: refs/heads/master@{#419497}
(cherry picked from commit a4d9c53e0ca156489f3a9b970925594786bab1c0)

[khmel, 2016-09-21 20:29:54]

The CQ bit was checked by khmel@chromium.org

[commit-bot: I haz the power, 2016-09-21 20:30:15]

CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[commit-bot: I haz the power, 2016-09-21 20:33:51]

Committed patchset #1 (id:1)