Cross Reference: /external/r8/src/test/examples/shaking4

`Name`	`Date`	`Size`
Up to higher level directory
`A.java`	06-Dec-2017	`291`
`Interface.java`	06-Dec-2017	`294`
`keep-rules-dont-shrink.txt`	06-Dec-2017	`239`
`keep-rules.txt`	06-Dec-2017	`453`
`Shaking.java`	06-Dec-2017	`346`
`Superclass.java`	06-Dec-2017	`337`