Cross Reference: /external/clang/test/Modules/Inputs/PR25501

`Name`	`Date`	`Size`
Up to higher level directory
`a0.h`	06-Dec-2017	`20`
`a1.h`	06-Dec-2017	`20`
`a2.h`	06-Dec-2017	`55`
`b.h`	06-Dec-2017	`43`
`module.modulemap`	06-Dec-2017	`154`
`Vector.h`	06-Dec-2017	`106`