cros: Added a new function to quick unlock api for checking unfinished pins.

chrome/browser/policy/configuration_policy_handler_list_factory.cc

Index: chrome/browser/policy/configuration_policy_handler_list_factory.cc
diff --git a/chrome/browser/policy/configuration_policy_handler_list_factory.cc b/chrome/browser/policy/configuration_policy_handler_list_factory.cc
index b5c1210616fd30647e10aa711821f0ae80ff2cf4..25e46078b4db1af6c0f167783debd666d51716d9 100644
--- a/chrome/browser/policy/configuration_policy_handler_list_factory.cc
+++ b/chrome/browser/policy/configuration_policy_handler_list_factory.cc
@@ -606,6 +606,12 @@ const PolicyToPreferenceMapEntry kSimplePolicyMap[] = {
 
 #if defined(OS_CHROMEOS)
   { key::kAllowScreenLock, prefs::kAllowScreenLock, base::Value::TYPE_BOOLEAN },
+  { key::kPinUnlockMinimumLength, prefs::kPinUnlockMinimumLength,
+    base::Value::TYPE_INTEGER },
+  { key::kPinUnlockMaximumLength, prefs::kPinUnlockMaximumLength,
+    base::Value::TYPE_INTEGER },
+  { key::kPinUnlockAllowWeakPins, prefs::kPinUnlockAllowWeakPins,
+    base::Value::TYPE_BOOLEAN },
 #endif
 };