PostTaskToIOThread   76 chrome/browser/signin/signin_names_io_thread.cc   PostTaskToIOThread(true, base::UTF8ToUTF16(username));
PostTaskToIOThread   80 chrome/browser/signin/signin_names_io_thread.cc   PostTaskToIOThread(false, base::UTF8ToUTF16(username));
PostTaskToIOThread   61 chrome/browser/signin/signin_names_io_thread.h   void PostTaskToIOThread(bool add, const base::string16& email);