ScreenLockObserver  121 chrome/browser/chromeos/login/screen_locker.cc   DISALLOW_COPY_AND_ASSIGN(ScreenLockObserver);
ScreenLockObserver  124 chrome/browser/chromeos/login/screen_locker.cc ScreenLockObserver* g_screen_lock_observer = NULL;
ScreenLockObserver  392 chrome/browser/chromeos/login/screen_locker.cc   g_screen_lock_observer = new ScreenLockObserver;