(Sorry again. The issue is still there. The comment #1 was wrong. Let me remove the comment #1. The experimental flag was enabled when I wrote it)

So, Yamaguchi-san, could you take a look at this? If this change is intended. please close this. Thanks.

We didn't do anything specific to lockscreen on this icon's class, and had not got the specific spec for this behavior.

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/155c0b00dea62b3572e729b049d292e131ed6a96

commit 155c0b00dea62b3572e729b049d292e131ed6a96
Author: yoshiki iguchi <yoshiki@chromium.org>
Date: Tue Oct 23 02:13:15 2018

Show notification counter even on lock screen

- Unblock notifications in SessionStateNotificationBlocker
- Hide the message center by seeing the session sate (previously, it
  saw the count of notifications)
- Change height below scroll, by checking the visibility of message
  center (previously, it checked only the height)

Bug:  893945 
Test: manual

Change-Id: I39d30d0949d0f44078193ab7e4859f66eeebf880
Reviewed-on: https://chromium-review.googlesource.com/c/1282426
Reviewed-by: Tatsuhisa Yamaguchi <yamaguchi@chromium.org>
Reviewed-by: Tetsui Ohkubo <tetsui@chromium.org>
Commit-Queue: Yoshiki Iguchi <yoshiki@chromium.org>
Cr-Commit-Position: refs/heads/master@{#601824}
[modify] https://crrev.com/155c0b00dea62b3572e729b049d292e131ed6a96/ash/system/message_center/new_unified_message_center_view.cc
[modify] https://crrev.com/155c0b00dea62b3572e729b049d292e131ed6a96/ash/system/message_center/session_state_notification_blocker.cc
[modify] https://crrev.com/155c0b00dea62b3572e729b049d292e131ed6a96/ash/system/message_center/unified_message_center_view.cc

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/3767b2adaecf1079bd957437598440aee49950ac

commit 3767b2adaecf1079bd957437598440aee49950ac
Author: Yoshiki Iguchi <yoshiki@chromium.org>
Date: Tue Oct 23 13:51:19 2018

Revert "Show notification counter even on lock screen"

This reverts commit 155c0b00dea62b3572e729b049d292e131ed6a96.

Reason for revert: This breaks the lock screen notification.

Original change's description:
> Show notification counter even on lock screen
> 
> - Unblock notifications in SessionStateNotificationBlocker
> - Hide the message center by seeing the session sate (previously, it
>   saw the count of notifications)
> - Change height below scroll, by checking the visibility of message
>   center (previously, it checked only the height)
> 
> Bug:  893945 
> Test: manual
> 
> Change-Id: I39d30d0949d0f44078193ab7e4859f66eeebf880
> Reviewed-on: https://chromium-review.googlesource.com/c/1282426
> Reviewed-by: Tatsuhisa Yamaguchi <yamaguchi@chromium.org>
> Reviewed-by: Tetsui Ohkubo <tetsui@chromium.org>
> Commit-Queue: Yoshiki Iguchi <yoshiki@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#601824}

TBR=yoshiki@chromium.org,yamaguchi@chromium.org,tetsui@chromium.org

Change-Id: I5b2ded9c9f3212ab3cd085a3ea0721e69b6fae45
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug:  893945 
Reviewed-on: https://chromium-review.googlesource.com/c/1296330
Reviewed-by: Yoshiki Iguchi <yoshiki@chromium.org>
Commit-Queue: Yoshiki Iguchi <yoshiki@chromium.org>
Cr-Commit-Position: refs/heads/master@{#601930}
[modify] https://crrev.com/3767b2adaecf1079bd957437598440aee49950ac/ash/system/message_center/new_unified_message_center_view.cc
[modify] https://crrev.com/3767b2adaecf1079bd957437598440aee49950ac/ash/system/message_center/session_state_notification_blocker.cc
[modify] https://crrev.com/3767b2adaecf1079bd957437598440aee49950ac/ash/system/message_center/unified_message_center_view.cc

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/ca86bf3452a5bea83f725a0072c37f9430060105

commit ca86bf3452a5bea83f725a0072c37f9430060105
Author: yoshiki iguchi <yoshiki@chromium.org>
Date: Fri Oct 26 11:35:55 2018

Reland "Show notification counter even on lock screen"

This reverts commit 3767b2adaecf1079bd957437598440aee49950ac.

Reason for revert: This CL is innocent. I fixed the issue separately: crrev.com/c/1297853.

Original change's description:
> Revert "Show notification counter even on lock screen"
>
> This reverts commit 155c0b00dea62b3572e729b049d292e131ed6a96.
>
> Reason for revert: This breaks the lock screen notification.
>
> Original change's description:
> > Show notification counter even on lock screen
> >
> > - Unblock notifications in SessionStateNotificationBlocker
> > - Hide the message center by seeing the session sate (previously, it
> >   saw the count of notifications)
> > - Change height below scroll, by checking the visibility of message
> >   center (previously, it checked only the height)
> >
> > Bug:  893945 
> > Test: manual
> >
> > Change-Id: I39d30d0949d0f44078193ab7e4859f66eeebf880
> > Reviewed-on: https://chromium-review.googlesource.com/c/1282426
> > Reviewed-by: Tatsuhisa Yamaguchi <yamaguchi@chromium.org>
> > Reviewed-by: Tetsui Ohkubo <tetsui@chromium.org>
> > Commit-Queue: Yoshiki Iguchi <yoshiki@chromium.org>
> > Cr-Commit-Position: refs/heads/master@{#601824}
>
> TBR=yoshiki@chromium.org,yamaguchi@chromium.org,tetsui@chromium.org
>
> Change-Id: I5b2ded9c9f3212ab3cd085a3ea0721e69b6fae45
> No-Presubmit: true
> No-Tree-Checks: true
> No-Try: true
> Bug:  893945 
> Reviewed-on: https://chromium-review.googlesource.com/c/1296330
> Reviewed-by: Yoshiki Iguchi <yoshiki@chromium.org>
> Commit-Queue: Yoshiki Iguchi <yoshiki@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#601930}

TBR=yoshiki@chromium.org,yamaguchi@chromium.org,tetsui@chromium.org


Bug:  893945 
Change-Id: Iaee3fc6e7dcb996be1406897b07f571991a7e3db
Reviewed-on: https://chromium-review.googlesource.com/c/1301037
Commit-Queue: Yoshiki Iguchi <yoshiki@chromium.org>
Reviewed-by: Yoshiki Iguchi <yoshiki@chromium.org>
Cr-Commit-Position: refs/heads/master@{#603058}
[modify] https://crrev.com/ca86bf3452a5bea83f725a0072c37f9430060105/ash/system/message_center/session_state_notification_blocker.cc