As chatted with yoshiki@ offline, I'll hide the settings button on MNC.

b/36220293

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/24d294391f1a0fce66fa1802d09f9e4a89a94841

commit 24d294391f1a0fce66fa1802d09f9e4a89a94841
Author: yhanada <yhanada@chromium.org>
Date: Fri Mar 17 04:58:36 2017

Hide the settings button on a notification in MNC.

BUG= 700253 
TEST=Check that the settings button shows in NYC and it hides in MNC.

Review-Url: https://codereview.chromium.org/2747383002
Cr-Commit-Position: refs/heads/master@{#457688}

[modify] https://crrev.com/24d294391f1a0fce66fa1802d09f9e4a89a94841/ui/arc/notification/arc_custom_notification_item.h
[modify] https://crrev.com/24d294391f1a0fce66fa1802d09f9e4a89a94841/ui/arc/notification/arc_custom_notification_view.cc
[modify] https://crrev.com/24d294391f1a0fce66fa1802d09f9e4a89a94841/ui/arc/notification/arc_custom_notification_view.h
[modify] https://crrev.com/24d294391f1a0fce66fa1802d09f9e4a89a94841/ui/arc/notification/arc_notification_item.cc
[modify] https://crrev.com/24d294391f1a0fce66fa1802d09f9e4a89a94841/ui/arc/notification/arc_notification_item.h
[modify] https://crrev.com/24d294391f1a0fce66fa1802d09f9e4a89a94841/ui/arc/notification/arc_notification_manager.cc
[modify] https://crrev.com/24d294391f1a0fce66fa1802d09f9e4a89a94841/ui/arc/notification/arc_notification_manager.h

Your change meets the bar and is auto-approved for M58. Please go ahead and merge the CL to branch 3029 manually. Please contact milestone owner if you have questions.
Owners: amineer@(Android), cmasso@(iOS), bhthompson@(ChromeOS), govind@(Desktop)

For more details visit https://www.chromium.org/issue-tracking/autotriage - Your friendly Sheriffbot

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/44c40a2361759cf05a715d76cb5204ddbd55dcfb

commit 44c40a2361759cf05a715d76cb5204ddbd55dcfb
Author: yhanada <yhanada@chromium.org>
Date: Tue Mar 21 05:38:39 2017

Hide the settings button on a notification in MNC.

BUG= 700253 
TEST=Check that the settings button shows in NYC and it hides in MNC.

Review-Url: https://codereview.chromium.org/2747383002
Cr-Commit-Position: refs/heads/master@{#457688}
(cherry picked from commit 24d294391f1a0fce66fa1802d09f9e4a89a94841)

Review-Url: https://codereview.chromium.org/2763913003 .
Cr-Commit-Position: refs/branch-heads/3029@{#319}
Cr-Branched-From: 939b32ee5ba05c396eef3fd992822fcca9a2e262-refs/heads/master@{#454471}

[modify] https://crrev.com/44c40a2361759cf05a715d76cb5204ddbd55dcfb/ui/arc/notification/arc_custom_notification_item.h
[modify] https://crrev.com/44c40a2361759cf05a715d76cb5204ddbd55dcfb/ui/arc/notification/arc_custom_notification_view.cc
[modify] https://crrev.com/44c40a2361759cf05a715d76cb5204ddbd55dcfb/ui/arc/notification/arc_custom_notification_view.h
[modify] https://crrev.com/44c40a2361759cf05a715d76cb5204ddbd55dcfb/ui/arc/notification/arc_notification_item.cc
[modify] https://crrev.com/44c40a2361759cf05a715d76cb5204ddbd55dcfb/ui/arc/notification/arc_notification_item.h
[modify] https://crrev.com/44c40a2361759cf05a715d76cb5204ddbd55dcfb/ui/arc/notification/arc_notification_manager.cc
[modify] https://crrev.com/44c40a2361759cf05a715d76cb5204ddbd55dcfb/ui/arc/notification/arc_notification_manager.h

Verified on chrome 58.0.3029.36/9334.20.0 cyan