tree 47906146f8da758cd9eadd076a2f0783347bb577
parent 86d996f288dd46c81485ccf8ab6b87a16af9d090
author Victor Chang <vichang@google.com> 1546970247 +0000
committer Behdad Esfahbod <behdad@behdad.org> 1546972337 -0500

Fix the incompatible type of UChar and char16_t

UChar is not always char16_t in some platforms. In some cases,
it's wchar_t or uint16_t.

Use std::basic_string<UChar> to avoid std::u16string.