Created new account type for ARC++ kiosk.

components/user_manager/user_manager.h

Index: components/user_manager/user_manager.h
diff --git a/components/user_manager/user_manager.h b/components/user_manager/user_manager.h
index e79087351147da96469dcd3aadacc48a89f16a11..32bb74eb04b61fc014d9dff1800d78f0f03da94c 100644
--- a/components/user_manager/user_manager.h
+++ b/components/user_manager/user_manager.h
@@ -298,6 +298,9 @@ class USER_MANAGER_EXPORT UserManager {
   // Returns true if we're logged in as a kiosk app.
   virtual bool IsLoggedInAsKioskApp() const = 0;
 
+  // Returns true if we're logged in as a ARC kiosk app.
+  virtual bool IsLoggedInAsArcKioskApp() const = 0;
+
   // Returns true if we're logged in as the stub user used for testing on Linux.
   virtual bool IsLoggedInAsStub() const = 0;