Fix the settings button and UMA metrics for the message center

Fix the settings button and UMA metrics for the message center

The settings button was unintentionally broken for Windows and
Linux users in 2799653004, as was gathering of some UMA. This
CL offers a slight refactoring that meets all goals.

BUG=706658
Review-Url: https://codereview.chromium.org/2807623002
Cr-Commit-Position: refs/heads/master@{#463339}
(cherry picked from commit 9b6e3c78898f12a0183edffb62d189cb716c6135)

Review-Url: https://codereview.chromium.org/2822933002 .
Cr-Commit-Position: refs/branch-heads/3029@{#729}
Cr-Branched-From: 939b32ee5ba05c396eef3fd992822fcca9a2e262-refs/heads/master@{#454471}
Committed: https://chromium.googlesource.com/chromium/src/+/47650b27b22ddf35a1abed716c82c4d8248ce1f8

[yhanada, 2017-04-17 02:13:31]

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

[commit-bot: I haz the power, 2017-04-17 02:13:38]

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, 2017-04-17 02:13:39]

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

[commit-bot: I haz the power, 2017-04-17 02:13:39]

Dry run: CLs for remote refs other than refs/heads/master must contain
NOTRY=true and NOPRESUBMIT=true in order for the CQ to process them

[yhanada, 2017-04-17 02:21:01]

Description was changed from

==========
Fix the settings button and UMA metrics for the message center

The settings button was unintentionally broken for Windows and
Linux users in 2799653004, as was gathering of some UMA. This
CL offers a slight refactoring that meets all goals.

BUG=706658

Review-Url: https://codereview.chromium.org/2807623002
Cr-Commit-Position: refs/heads/master@{#463339}
(cherry picked from commit 9b6e3c78898f12a0183edffb62d189cb716c6135)
==========

to

==========
Fix the settings button and UMA metrics for the message center

The settings button was unintentionally broken for Windows and
Linux users in 2799653004, as was gathering of some UMA. This
CL offers a slight refactoring that meets all goals.

BUG=706658

Review-Url: https://codereview.chromium.org/2807623002
Cr-Commit-Position: refs/heads/master@{#463339}
(cherry picked from commit 9b6e3c78898f12a0183edffb62d189cb716c6135)

Review-Url: https://codereview.chromium.org/2822933002 .
Cr-Commit-Position: refs/branch-heads/3029@{#729}
Cr-Branched-From:
939b32ee5ba05c396eef3fd992822fcca9a2e262-refs/heads/master@{#454471}
Committed:
https://chromium.googlesource.com/chromium/src/+/47650b27b22ddf35a1abed716c82...
==========

[yhanada, 2017-04-17 02:21:04]

Committed patchset #2 (id:20001) manually as
47650b27b22ddf35a1abed716c82c4d8248ce1f8.