Cross Reference: /prebuilts/ndk/r11/sources/cxx-stl/llvm-libc++/libcxx/test/thread/futures/futures.errors

`Name`	`Date`	`Size`
Up to higher level directory
`default_error_condition.pass.cpp`	06-Dec-2017	`825`
`equivalent_error_code_int.pass.cpp`	06-Dec-2017	`726`
`equivalent_int_error_condition.pass.cpp`	06-Dec-2017	`761`
`future_category.pass.cpp`	06-Dec-2017	`598`
`make_error_code.pass.cpp`	06-Dec-2017	`722`
`make_error_condition.pass.cpp`	06-Dec-2017	`809`

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