Automated regression test for Bug #1227714 (OSK doesn't close after the application closes)

Marking other bug as duplicate, no need to have 2 bugs for one defect.
Copying details to this one so not lost.

Original Bug Text:

Steps to reproduce:

1. Flash the latest daily current to Nexus 4
2. Launch the pre installed Calculator app
3. Launch the web browser app and tap on URL field to bring the OSK
4. Now ssh to the device and kill the browser application e.g. using kill -9
5. Observe that OSK doesn't close after the application closed/killed/crashed.
6. Also observe that if calculator application is not launched and running in background then OSK will disappear on killing the web browser app.

ProblemType: Bug
DistroRelease: Ubuntu 13.10
Package: ubuntu-keyboard 0.99.trunk.phablet2+13.10.20130912-0ubuntu1
Uname: Linux 3.4.0-3-mako armv7l
ApportVersion: 2.12.1-0ubuntu4
Architecture: armhf
Date: Thu Sep 19 14:11:29 2013
InstallationDate: Installed on 2013-09-17 (1 days ago)
InstallationMedia: Ubuntu Saucy Salamander (development branch) - armhf (20130917.1)
MarkForUpload: True
ProcEnviron:
 TERM=linux
 PATH=(custom, no user)
SourcePackage: ubuntu-keyboard
UpgradeStatus: No upgrade log present (probably fresh install)

Original Comment from dupe bug:

I can confirm with a variant where you don't kill the browser, which is not a "user" way to terminate an application on the phone but instead when in the browser with OSK displayed, reveal the launcher and press the calculator app, OSK should hide but it doesn't.

I am pretty sure that veebers is not working on this bug.