diff --git a/core/includes/bootstrap.inc b/core/includes/bootstrap.inc
index b56ada8..6ed4656 100644
--- a/core/includes/bootstrap.inc
+++ b/core/includes/bootstrap.inc
@@ -1549,6 +1549,19 @@ function drupal_set_title($title = NULL, $output = Title::CHECK_PLAIN) {
 }
 
 /**
+ * Generates a default anonymous $user object.
+ *
+ * @return \Drupal\Core\Session\AccountInterface
+ *   The user session object.
+ *
+ * @deprecated as of Drupal 8.0. Use \Drupal\Core\Session\AnonymousUserSession()
+ *   instead.
+ */
+function drupal_anonymous_user() {
+  return new AnonymousUserSession();
+}
+
+/**
  * Ensures Drupal is bootstrapped to the specified phase.
  *
  * In order to bootstrap Drupal from another PHP script, you can use this code: