// http://www.socialsecurity.gov/employer/stateweb.htm
// http://www.socialsecurity.gov/employer/ssnvhighgroup.htm
- if (number_string.length() != 9 || !IsStringASCII(number_string))
+ if (number_string.length() != 9 || !base::IsStringASCII(number_string))
return false;
int area;