Cross Reference: /frameworks/layoutlib/bridge/resources/bars/v21/mdpi

`Name`	`Date`	`Size`
Up to higher level directory
`ic_sysbar_back.png`	06-Dec-2017	`1,010`
`ic_sysbar_home.png`	06-Dec-2017	`1K`
`ic_sysbar_recent.png`	06-Dec-2017	`562`
`stat_sys_battery_100.png`	06-Dec-2017	`18.9K`