Created new account type for ARC++ kiosk.

components/user_manager/fake_user_manager.cc

Index: components/user_manager/fake_user_manager.cc
diff --git a/components/user_manager/fake_user_manager.cc b/components/user_manager/fake_user_manager.cc
index 52e54ae06cf2b890f5b1121ad9f2db9588d01e24..04164dbe074e2696c086424a46957532b6ecc349 100644
--- a/components/user_manager/fake_user_manager.cc
+++ b/components/user_manager/fake_user_manager.cc
@@ -244,6 +244,13 @@ bool FakeUserManager::IsLoggedInAsKioskApp() const {
              : false;
 }
 
+bool FakeUserManager::IsLoggedInAsArcKioskApp() const {
+  const user_manager::User* active_user = GetActiveUser();
+  return active_user
+             ? active_user->GetType() == user_manager::USER_TYPE_ARC_KIOSK_APP
+             : false;
+}
+
 bool FakeUserManager::IsLoggedInAsStub() const {
   return false;
 }