cros: Added policies for screen unlock.

chrome/browser/chromeos/login/quick_unlock/pin_storage.h

Index: chrome/browser/chromeos/login/quick_unlock/pin_storage.h
diff --git a/chrome/browser/chromeos/login/quick_unlock/pin_storage.h b/chrome/browser/chromeos/login/quick_unlock/pin_storage.h
index f9fe72aadbecff1921e3716e0c1d82bf26680110..83ecc900ee1d01299b8330a5756cb4cfc6fef152 100644
--- a/chrome/browser/chromeos/login/quick_unlock/pin_storage.h
+++ b/chrome/browser/chromeos/login/quick_unlock/pin_storage.h
@@ -23,9 +23,8 @@ namespace chromeos {
 
 class PinStorage : public KeyedService {
  public:
-  // TODO(jdufault): Pull these values in from policy. See crbug.com/612271.
+  // TODO(sammiequon): Pull this value in from policy. See crbug.com/612271.
   static const int kMaximumUnlockAttempts = 3;
-  static const base::TimeDelta kStrongAuthTimeout;
 
   // Registers profile prefs.
   static void RegisterProfilePrefs(user_prefs::PrefRegistrySyncable* registry);