Set newState to PAUSED if getPlaybackState is null after music paused

For some music apps, getPlaybackState() always return null. If
music is paused and mAudioManagerIsPlaying is false, we need to
update newState to PAUSED.

Change-Id: Ib7a8839a1f5403ec31616b94402f4dfbf25c40c7
CRs-Fixed: 2371303
1 file changed