app/design/adminhtml/default/default/layout/ew/nativepasswords.xml
<?xml version="1.0"?>
<layout>
<default>
<reference name="notifications">
<block type="ew_nativepasswords/adminhtml_notification_enabled"
name="notification_ew_nativepasswords_enabled" as="notification_ew_nativepasswords_enabled"
acl="system/adminnotification/show_toolbar"
template="ew/nativepasswords/notification/toolbar/enabled.phtml" />
</reference>
</default>
</layout>