Class android.app.usage.UsageStatsManager

Added Methods
int getAppStandbyBucket()  
List<EventStats> queryEventStats(int, long, long)  
UsageEvents queryEventsForSelf(long, long)  
 

Added Fields
int STANDBY_BUCKET_ACTIVE  
int STANDBY_BUCKET_FREQUENT  
int STANDBY_BUCKET_RARE  
int STANDBY_BUCKET_WORKING_SET