message: Deprecate some functions which do not exist if crypto::tink::util::Status is an alias for absl::Status.
diff: @@ -208,8 +208,10 @@ inline bool Status::operator!=(const Status& other) const {
  return !(*this == other);
  }
  +ABSL_DEPRECATED("Use absl::StatusCodeToString with a StatusCode instead.")
  extern std::string ErrorCodeString(crypto::tink::util::error::Code error);
  +ABSL_DEPRECATED("Use absl::StatusCode instead.")
  extern ::std::ostream& operator<<(::std::ostream& os,
  ::crypto::tink::util::error::Code code);
  extern ::std::ostream& operator<<(::std::ostream& os, const Status& other);
  