sounds keeps playing after killing the application if a low battery warning was triggered

[Brendan Donegan]

Prerequisites:

There must be some music loaded on the device

Steps to reproduce:

1. Open the Music app from the Click scope
2. Play a track
3. While the track is playing, trigger a low battery warning with:

$ gdbus call --session --dest "com.canonical.indicator.power" \
             --object-path /com/canonical/indicator/power/Testing \
             --method org.freedesktop.DBus.Properties.Set \
             com.canonical.indicator.power.Testing \
             MockBatteryEnabled \
             "<true>"
$ gdbus call --session --dest "com.canonical.indicator.power" \
             --object-path /com/canonical/indicator/power/Testing \
             --method org.freedesktop.DBus.Properties.Set \
             com.canonical.indicator.power.Testing \
             MockBatteryLevel \
             "<uint32 10>"

4. Dismiss the notification
5. Swipe from right to open the switcher and close the music app

Expected result:

Music stops playing (which is what happens if there was no battery notification)

Actual result:

Music continues to play

The same steps can be done for video and the same result will happen (I assume the videos audio channel is continuing to play, not the video itself)

ProblemType: Bug
DistroRelease: Ubuntu RTM 14.09
Package: media-hub 2.0.0+14.10.20141015-0ubuntu1
Uname: Linux 3.4.67 armv7l
ApportVersion: 2.14.7-0ubuntu5
Architecture: armhf
Date: Thu Oct 16 07:27:36 2014
InstallationDate: Installed on 2014-10-16 (0 days ago)
InstallationMedia: Ubuntu Utopic Unicorn (development branch) - armhf (20141016-010328)
SourcePackage: media-hub
UpgradeStatus: No upgrade log present (probably fresh install)