Add FingerprintUnlock KeyedService for each profile

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 626aef1f15f0a017eb5b5087c3fae0475ecb71e2..8508fe469e882614532f3b1ea71591f5f3f8e9ff 100644
--- a/chrome/browser/chromeos/login/quick_unlock/quick_unlock_utils.h
+++ b/chrome/browser/chromeos/login/quick_unlock/quick_unlock_utils.h
@@ -5,6 +5,10 @@
 #ifndef CHROME_BROWSER_CHROMEOS_LOGIN_QUICK_UNLOCK_QUICK_UNLOCK_UTILS_H_
 #define CHROME_BROWSER_CHROMEOS_LOGIN_QUICK_UNLOCK_QUICK_UNLOCK_UTILS_H_
 
+namespace base {
+class TimeDelta;
+}
+
 class PrefRegistrySimple;
 class PrefService;
 
@@ -22,6 +26,9 @@ enum class PasswordConfirmationFrequency {
   WEEK = 3
 };
 
+base::TimeDelta PasswordConfirmationFrequencyToTimeDelta(
+    PasswordConfirmationFrequency frequency);
+
 // Register quick unlock prefs.
 void RegisterProfilePrefs(PrefRegistrySimple* registry);