Chromad: Switch AuthPolicyClient to use cros_system_api enums.

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

Index: chrome/browser/ui/webui/chromeos/login/gaia_screen_handler.cc
diff --git a/chrome/browser/ui/webui/chromeos/login/gaia_screen_handler.cc b/chrome/browser/ui/webui/chromeos/login/gaia_screen_handler.cc
index 9905241cef80d27abdf9a6cc7b9925800bfb9de9..03933fc25f1c9ff75e16a705df62d141f6665a71 100644
--- a/chrome/browser/ui/webui/chromeos/login/gaia_screen_handler.cc
+++ b/chrome/browser/ui/webui/chromeos/login/gaia_screen_handler.cc
@@ -501,9 +501,9 @@ AccountId GaiaScreenHandler::GetAccountId(
 
 void GaiaScreenHandler::DoAdAuth(const std::string& username,
                                  const Key& key,
-                                 authpolicy::AuthUserErrorType error,
+                                 authpolicy::ErrorType error,
                                  const std::string& uid) {
-  if (error == authpolicy::AUTH_USER_ERROR_NONE && !uid.empty()) {
+  if (error == authpolicy::ERROR_NONE && !uid.empty()) {
     const AccountId account_id(
         GetAccountId(username, uid, AccountType::ACTIVE_DIRECTORY));
     UserContext user_context(account_id);