Cross Reference: /prebuilts/ndk/r16/sources/cxx-stl/llvm-libc++/test/std/thread/futures/futures.errors

`Name`	`Date`	`Size`
Up to higher level directory
`default_error_condition.pass.cpp`	21-Aug-2018	`866`
`equivalent_error_code_int.pass.cpp`	21-Aug-2018	`767`
`equivalent_int_error_condition.pass.cpp`	21-Aug-2018	`802`
`future_category.pass.cpp`	21-Aug-2018	`639`
`make_error_code.pass.cpp`	21-Aug-2018	`763`
`make_error_condition.pass.cpp`	21-Aug-2018	`850`

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