[Extensions UI Mac] Delete the overflow container when the menu closes

[Extensions UI Mac] Delete the overflow container when the menu closes

Cocoa menus aren't entirely cleaned up when the menu closes (the
controller persists across opens/closes), but the views are removed.
Explicitly delete the BrowserActionsController from the app menu when
the menu closes to prevent it from using a non-existent view.

BUG=604355
Committed: https://crrev.com/85d435654b3a9786996c8a67e12185c0a5346652
Cr-Commit-Position: refs/heads/master@{#388023}

[Devlin, 2016-04-18 19:09:33]

rdevlin.cronin@chromium.org changed reviewers:
+ rsesek@chromium.org

[Devlin, 2016-04-18 19:09:34]

Another one for you, Robert.

[Robert Sesek, 2016-04-18 20:51:19]

LGTM

[Devlin, 2016-04-18 21:02:19]

The CQ bit was checked by rdevlin.cronin@chromium.org

[commit-bot: I haz the power, 2016-04-18 21:02:52]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1895213002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1895213002/1

[commit-bot: I haz the power, 2016-04-18 21:08:48]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-04-18 21:10:37]

Description was changed from

==========
[Extensions UI Mac] Delete the overflow container when the menu closes

Cocoa menus aren't entirely cleaned up when the menu closes (the
controller persists across opens/closes), but the views are removed.
Explicitly delete the BrowserActionsController from the app menu when
the menu closes to prevent it from using a non-existent view.

BUG=604355
==========

to

==========
[Extensions UI Mac] Delete the overflow container when the menu closes

Cocoa menus aren't entirely cleaned up when the menu closes (the
controller persists across opens/closes), but the views are removed.
Explicitly delete the BrowserActionsController from the app menu when
the menu closes to prevent it from using a non-existent view.

BUG=604355

Committed: https://crrev.com/85d435654b3a9786996c8a67e12185c0a5346652
Cr-Commit-Position: refs/heads/master@{#388023}
==========

[commit-bot: I haz the power, 2016-04-18 21:10:38]

Patchset 1 (id:??) landed as
https://crrev.com/85d435654b3a9786996c8a67e12185c0a5346652
Cr-Commit-Position: refs/heads/master@{#388023}