Cross Reference: /prebuilts/go/linux-x86/src/cmd/vendor/github.com/google/pprof/internal/graph/testdata

`Name`	`Date`	`Size`
Up to higher level directory
`compose1.dot`	21-Aug-2018	`543`
`compose2.dot`	21-Aug-2018	`603`
`compose3.dot`	21-Aug-2018	`842`
`compose4.dot`	21-Aug-2018	`165`
`compose5.dot`	21-Aug-2018	`833`
`compose6.dot`	21-Aug-2018	`584`