md-settings: Added settings for fingerprint 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 845574e052b62acad7d687d5357ac66fe6c97951..badec7cfadd90596ff34b7147a6805a5b1358627 100644
--- a/chrome/browser/chromeos/login/quick_unlock/quick_unlock_utils.h
+++ b/chrome/browser/chromeos/login/quick_unlock/quick_unlock_utils.h
@@ -27,6 +27,8 @@ void RegisterQuickUnlockProfilePrefs(PrefRegistrySimple* registry);
 // Returns true if PIN unlock is allowed by policy and the quick unlock feature
 // flag is present.
 bool IsPinUnlockEnabled(PrefService* pref_service);
+// Returns true if the fingerprint unlock feature flag is present.
+bool IsFingerprintUnlockEnabled();
 
 // Forcibly enable quick-unlock for testing.
 void EnableQuickUnlockForTesting();