Move PrefRegistrySimple to use unique_ptr<Value>

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

Index: chrome/browser/chromeos/login/quick_unlock/quick_unlock_utils.cc
diff --git a/chrome/browser/chromeos/login/quick_unlock/quick_unlock_utils.cc b/chrome/browser/chromeos/login/quick_unlock/quick_unlock_utils.cc
index a70a11a1404a61631a332d39bdf964e6784fcd75..f3a306c6ccf5ab25c2c5ebe2a7bede9a4e88da90 100644
--- a/chrome/browser/chromeos/login/quick_unlock/quick_unlock_utils.cc
+++ b/chrome/browser/chromeos/login/quick_unlock/quick_unlock_utils.cc
@@ -46,7 +46,7 @@ void RegisterProfilePrefs(PrefRegistrySimple* registry) {
   base::ListValue quick_unlock_whitelist_default;
   quick_unlock_whitelist_default.AppendString(kQuickUnlockWhitelistOptionPin);
   registry->RegisterListPref(prefs::kQuickUnlockModeWhitelist,
-                             quick_unlock_whitelist_default.DeepCopy());
+                             quick_unlock_whitelist_default.CreateDeepCopy());
   registry->RegisterIntegerPref(
       prefs::kQuickUnlockTimeout,
       static_cast<int>(PasswordConfirmationFrequency::DAY));