Use correct element for Form Not Secure warning

components/autofill/content/renderer/password_autofill_agent.cc

Index: components/autofill/content/renderer/password_autofill_agent.cc
diff --git a/components/autofill/content/renderer/password_autofill_agent.cc b/components/autofill/content/renderer/password_autofill_agent.cc
index 8c943d20d593920a99ee886384680c9332065c87..515fb7be6e9d203cb3c80ab3731fee58f2d0557c 100644
--- a/components/autofill/content/renderer/password_autofill_agent.cc
+++ b/components/autofill/content/renderer/password_autofill_agent.cc
@@ -1266,7 +1266,7 @@ void PasswordAutofillAgent::FillPasswordForm(
                        base::Unretained(&gatekeeper_)),
             logger.get())) {
       if (form_data.show_form_not_secure_warning_on_autofill)
-        autofill_agent_->ShowNotSecureWarning(username_element);
+        autofill_agent_->ShowNotSecureWarning(element);
     }
   }
 }