Remove "top_down" flag in the message center code

Remove "top_down" flag in the message center code

BUG=672392
TEST=trybots pass

Committed: https://crrev.com/1a656aba25e1ca5aafa5960763cc79f42f4bcf29
Cr-Commit-Position: refs/heads/master@{#437595}

[yoshiki, 2016-12-08 18:15:06]

The CQ bit was checked by yoshiki@chromium.org to run a CQ dry run

[commit-bot: I haz the power, 2016-12-08 18:16:00]

Dry run: 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, 2016-12-08 19:34:30]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2016-12-08 19:34:31]

Dry run: This issue passed the CQ dry run.

[yoshiki, 2016-12-09 07:57:55]

Description was changed from

==========
.

BUG=
==========

to

==========
Remove "top_down" flag in the message center code

BUG=672392
TEST=trybots pass
==========

[yoshiki, 2016-12-09 07:57:55]

yoshiki@chromium.org changed reviewers:
+ dewittj@chromium.org

[yoshiki, 2016-12-09 07:58:21]

Justin, PTAL. Thanks.

[dewittj, 2016-12-09 18:17:03]

lgtm

[yoshiki, 2016-12-09 18:17:33]

The CQ bit was checked by yoshiki@chromium.org

[commit-bot: I haz the power, 2016-12-09 18:18:13]

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, 2016-12-09 18:45:43]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1481307453848010, "parent_rev":
"d22f81c971f50ed62e3052de9162bba54207d16f", "commit_rev":
"203f8fc07f0ca77584a4a0db27e291daca9acaa1"}

[commit-bot: I haz the power, 2016-12-09 18:46:10]

Description was changed from

==========
Remove "top_down" flag in the message center code

BUG=672392
TEST=trybots pass
==========

to

==========
Remove "top_down" flag in the message center code

BUG=672392
TEST=trybots pass

Review-Url: https://codereview.chromium.org/2558083005
==========

[commit-bot: I haz the power, 2016-12-09 18:46:11]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-12-12 14:36:30]

Description was changed from

==========
Remove "top_down" flag in the message center code

BUG=672392
TEST=trybots pass

Review-Url: https://codereview.chromium.org/2558083005
==========

to

==========
Remove "top_down" flag in the message center code

BUG=672392
TEST=trybots pass

Committed: https://crrev.com/1a656aba25e1ca5aafa5960763cc79f42f4bcf29
Cr-Commit-Position: refs/heads/master@{#437595}
==========

[commit-bot: I haz the power, 2016-12-12 14:36:31]

Patchset 1 (id:??) landed as
https://crrev.com/1a656aba25e1ca5aafa5960763cc79f42f4bcf29
Cr-Commit-Position: refs/heads/master@{#437595}