Cross Reference: /external/libcxx/test/std/strings/basic.string/string.modifiers/string_erase

`Name`	`Date`	`Size`
Up to higher level directory
`iter.pass.cpp`	06-Dec-2017	`2.1K`
`iter_iter.pass.cpp`	06-Dec-2017	`6.3K`
`pop_back.pass.cpp`	06-Dec-2017	`1K`
`size_size.pass.cpp`	06-Dec-2017	`11K`