Google Play Music Tab Close Alarm

When listening to music, you'll get a warning before you close the Play Music Tab. Never accidentally close it again.

Update 2013-07-04 Now works with updated Google Play Music version Ever accidentally closed the Google Play Music Tab while playing music? That won't ever happen again. When you're listening to music and close the tab, this extension will warn you and give you a chance to abort :) --- Privacy Statement https://gist.github.com/robin-drexler/5233374/raw/b3d4d45ebe2ae992bbfc8650b9d861043560fd81/privacy+statement ---