Add AuthPolicyLoginHelper

chrome/browser/ui/webui/chromeos/login/enrollment_screen_handler.h

Index: chrome/browser/ui/webui/chromeos/login/enrollment_screen_handler.h
diff --git a/chrome/browser/ui/webui/chromeos/login/enrollment_screen_handler.h b/chrome/browser/ui/webui/chromeos/login/enrollment_screen_handler.h
index baeee53e445ba0c75ccc8bb64126ff2b8cb679f7..c263fa28c48500b5c5fb302c187632f7a29a390e 100644
--- a/chrome/browser/ui/webui/chromeos/login/enrollment_screen_handler.h
+++ b/chrome/browser/ui/webui/chromeos/login/enrollment_screen_handler.h
@@ -20,6 +20,7 @@
 
 namespace chromeos {
 
+class AuthPolicyLoginHelper;
 class ErrorScreensHistogramHelper;
 class HelpAppLauncher;
 
@@ -154,6 +155,10 @@ class EnrollmentScreenHandler
   // Help application used for help dialogs.
   scoped_refptr<HelpAppLauncher> help_app_;
 
+  // Helper to call AuthPolicyClient and cancel calls if needed. Used to join
+  // Active Directory domain.
+  std::unique_ptr<AuthPolicyLoginHelper> authpolicy_login_helper_;
+
   base::WeakPtrFactory<EnrollmentScreenHandler> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(EnrollmentScreenHandler);