Remove ActiveDesktopMonitor from DesktopNotificationsUnittests

Remove ActiveDesktopMonitor from DesktopNotificationsUnittests

An ActiveDesktopMonitor is actually not necessary here I believe (a window is never activated so the monitor simply returns the default host desktop type (which is the same as the type returned when there is no monitor).

BUG=179830
Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=208051

[gab, 2013-06-21 20:11:40]

Scott, you originally added this in
https://chromiumcodereview.appspot.com/11416145, I don't think it's required
anymore (and I'm about to change construction of ActiveDesktopMonitor and it
would be easier for me if this code was simply removed).

Thanks!
Gab

[scottmg, 2013-06-21 20:13:36]

if it works for all aura configs, lgtm

[Dmitry Titov, 2013-06-21 20:30:59]

lgtm too if all the bots are happy :-)

[commit-bot: I haz the power, 2013-06-21 20:33:32]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/gab@chromium.org/17074007/1

[commit-bot: I haz the power, 2013-06-22 02:34:21]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/gab@chromium.org/17074007/1

[commit-bot: I haz the power, 2013-06-22 15:01:31]

Change committed as 208051