Add AuthPolicyLoginHelper

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

Index: chrome/browser/ui/webui/chromeos/login/gaia_screen_handler.h
diff --git a/chrome/browser/ui/webui/chromeos/login/gaia_screen_handler.h b/chrome/browser/ui/webui/chromeos/login/gaia_screen_handler.h
index 3fa5c55ece9853489eec8b0b2b0477c12ef08053..be1a92fb9cf28b320ffa7848a7b7b1030e8407c4 100644
--- a/chrome/browser/ui/webui/chromeos/login/gaia_screen_handler.h
+++ b/chrome/browser/ui/webui/chromeos/login/gaia_screen_handler.h
@@ -26,6 +26,7 @@ class ActiveDirectoryAccountData;
 
 namespace chromeos {
 
+class AuthPolicyLoginHelper;
 class Key;
 class SigninScreenHandler;
 class SigninScreenHandlerDelegate;
@@ -109,6 +110,8 @@ class GaiaScreenHandler : public BaseScreenHandler,
                                       const std::string& old_password,
                                       const std::string& new_password);
 
+  void HandleCancelActiveDirectoryAuth();
+
   void HandleUsingSAMLAPI();
   void HandleScrapedPasswordCount(int password_count);
   void HandleScrapedPasswordVerificationFailed();
@@ -275,6 +278,10 @@ class GaiaScreenHandler : public BaseScreenHandler,
   // True if the authentication extension is still loading.
   bool auth_extension_being_loaded_ = false;
 
+  // Helper to call AuthPolicyClient and cancel calls if needed. Used to
+  // authenticate users against Active Directory server.
+  std::unique_ptr<AuthPolicyLoginHelper> authpolicy_login_helper_;
+
   base::WeakPtrFactory<GaiaScreenHandler> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(GaiaScreenHandler);