呼び出し元 
- SC_SessionFactory#getInstance?
概要
引数
実装
function setState($state = 'pc') {
switch ($state) {
case 'mobile':
$this->state = new LC_UseRequest_State_Mobile;
break;
case 'pc':
default:
$this->state = new LC_UseRequest_State_PC;
break;
}
}