cros: Added policies for screen unlock.

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

Index: chrome/browser/chromeos/login/quick_unlock/quick_unlock_utils.h
diff --git a/chrome/browser/chromeos/login/quick_unlock/quick_unlock_utils.h b/chrome/browser/chromeos/login/quick_unlock/quick_unlock_utils.h
index c7666c5ee6f7648535d6da4a2a471823436016ad..47966ca4f8ddd17f32b051167920e8a55eb629e3 100644
--- a/chrome/browser/chromeos/login/quick_unlock/quick_unlock_utils.h
+++ b/chrome/browser/chromeos/login/quick_unlock/quick_unlock_utils.h
@@ -5,11 +5,26 @@
 #ifndef CHROME_BROWSER_CHROMEOS_LOGIN_QUICK_UNLOCK_QUICK_UNLOCK_UTILS_H_
 #define CHROME_BROWSER_CHROMEOS_LOGIN_QUICK_UNLOCK_QUICK_UNLOCK_UTILS_H_
 
+class PrefRegistrySimple;
+class PrefService;
+
 namespace chromeos {
 
-// Returns true if quick unlock is allowed by policy and the feature flag is
+// Enumeration specifiying the possible intervals before a strong auth
+// (password) is required before continuing to use quick unlock.

[jdufault, 2016/11/02 22:52:59]

drop 'before continuing'

[sammiequon, 2016/11/03 00:45:52]

Done.

+enum class PasswordConfirmationFrequency {
+  SIX_HOURS = 0,
+  TWELVE_HOURS = 1,
+  DAY = 2,
+  WEEK = 3
+};
+
+// Register quick unlock prefs.
+void RegisterQuickUnlockProfilePrefs(PrefRegistrySimple* registry);
+
+// Returns true if pin unlock is allowed by policy and the feature flag is

[jdufault, 2016/11/02 22:52:59]

nit: pin => PIN

[sammiequon, 2016/11/03 00:45:52]

Done.

 // present.
-bool IsQuickUnlockEnabled();
+bool IsPinUnlockEnabled(PrefService* pref_service);
 
 // Forcibly enable quick-unlock for testing.
 void EnableQuickUnlockForTesting();