Revert of Don't allow a widget to send close notifications more than once.

Revert of Don't allow a widget to send close notifications more than once. (patchset #3 id:40001 of https://codereview.chromium.org/2834943002/ )

Reason for revert:
We will disable the failing test on Mac.

Original issue's description:
> Don't allow a widget to send close notifications more than once.
> 
> Add a test to make sure this works. Also fix a couple WidgetTests that
> were disabled.
> 
> BUG=714334
> 
> Review-Url: https://codereview.chromium.org/2834943002
> Cr-Commit-Position: refs/heads/master@{#467171}
> Committed: https://chromium.googlesource.com/chromium/src/+/bf25b17bd99b5dbeff92e62f8dddd289c335dc0a

TBR=sky@chromium.org
NOTRY=true
BUG=714334

[Evan Stade, 2017-04-27 01:44:11]

The CQ bit was checked by estade@chromium.org

[Evan Stade, 2017-04-27 01:44:12]

Created Revert of Don't allow a widget to send close notifications more than
once.

[Evan Stade, 2017-04-27 01:44:58]

Description was changed from

==========
Revert of Don't allow a widget to send close notifications more than once.
(patchset #3 id:40001 of https://codereview.chromium.org/2834943002/ )

Reason for revert:
We will disable the failing test on Mac.

Original issue's description:
> Don't allow a widget to send close notifications more than once.
> 
> Add a test to make sure this works. Also fix a couple WidgetTests that
> were disabled.
> 
> BUG=714334
> 
> Review-Url: https://codereview.chromium.org/2834943002
> Cr-Commit-Position: refs/heads/master@{#467171}
> Committed:
https://chromium.googlesource.com/chromium/src/+/bf25b17bd99b5dbeff92e62f8ddd...

TBR=sky@chromium.org
# Not skipping CQ checks because original CL landed more than 1 days ago.
BUG=714334
==========

to

==========
Revert of Don't allow a widget to send close notifications more than once.
(patchset #3 id:40001 of https://codereview.chromium.org/2834943002/ )

Reason for revert:
We will disable the failing test on Mac.

Original issue's description:
> Don't allow a widget to send close notifications more than once.
> 
> Add a test to make sure this works. Also fix a couple WidgetTests that
> were disabled.
> 
> BUG=714334
> 
> Review-Url: https://codereview.chromium.org/2834943002
> Cr-Commit-Position: refs/heads/master@{#467171}
> Committed:
https://chromium.googlesource.com/chromium/src/+/bf25b17bd99b5dbeff92e62f8ddd...

TBR=sky@chromium.org
NOTRY=true
BUG=714334
==========

[commit-bot: I haz the power, 2017-04-27 01:45:01]

CQ is trying da patch.

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

[Evan Stade, 2017-04-27 01:45:02]

The CQ bit was unchecked by estade@chromium.org

[Evan Stade, 2017-04-27 01:45:04]

The CQ bit was checked by estade@chromium.org

[commit-bot: I haz the power, 2017-04-27 01:45:43]

CQ is trying da patch.

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

[Evan Stade, 2017-04-27 01:48:29]

The CQ bit was unchecked by estade@chromium.org