#include "base/strings/utf_ostream_operators.h"
#include "base/strings/utf_string_conversions.h"
#include "base/types/supports_ostream_operator.h"
std::ostream& std::operator<<(std::ostream& out, const wchar_t* wstr) { … }
std::ostream& std::operator<<(std::ostream& out, std::wstring_view wstr) { … }
std::ostream& std::operator<<(std::ostream& out, const std::wstring& wstr) { … }
std::ostream& std::operator<<(std::ostream& out, const char16_t* str16) { … }
std::ostream& std::operator<<(std::ostream& out, std::u16string_view str16) { … }
std::ostream& std::operator<<(std::ostream& out, const std::u16string& str16) { … }