John Spurlock a4294297d4 Enhance the NotificationListenerService api.
Add to NotificationListenerService:
 - getActiveNotificationKeys() : String[]
 - getActiveNotifications(String[] keys) : StatusBarNotification[]
 - cancelNotifications(String[] keys) : void
 - onListenerConnected(String[] keys) : void

Add to StatusBarNotification:
 - getKey() : String

Bug:13562828
Change-Id: Idd9605dad8f942d68b4b32ab9625faf6c8642db9
2014-03-28 08:47:01 -04:00
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