Add ARC++ kiosk menu items and ability to start kiosk session.

chromeos/login/auth/cryptohome_authenticator.h

Index: chromeos/login/auth/cryptohome_authenticator.h
diff --git a/chromeos/login/auth/cryptohome_authenticator.h b/chromeos/login/auth/cryptohome_authenticator.h
index 1a528488181636f39b343ea045625202137df7e0..07beb203ea03aec251592f6c154dedadcd4c1b73 100644
--- a/chromeos/login/auth/cryptohome_authenticator.h
+++ b/chromeos/login/auth/cryptohome_authenticator.h
@@ -136,6 +136,12 @@ class CHROMEOS_EXPORT CryptohomeAuthenticator
   // otherwise.
   void LoginAsKioskAccount(const AccountId& app_account_id,
                            bool use_guest_mount) override;
+  // Initiates login into the ARC kiosk mode account identified by

[hidehiko, 2016/11/14 05:29:24]

nit: insert an empty line for consistency?

[Sergey Poromov, 2016/11/14 17:23:23]

Done.

+  // |app_account_id|.
+  // Mounts a public cryptohome, which will be ephemeral if the
+  // |DeviceEphemeralUsersEnabled| policy is enabled and non-ephemeral
+  // otherwise.
+  void LoginAsArcKioskAccount(const AccountId& app_account_id) override;
 
   // These methods must be called on the UI thread, as they make DBus calls
   // and also call back to the login UI.