This controls all the URLs the web view itself can be navigated to. Applies to top-level navigations only. In case we don't specify any specific URL, the default file:/// is used for navigating web views:
<!-- Allow links to google.com →<allow-navigation href="http://google.com/*" /><!-- Wildcards are allowed for the protocol, as a prefix to the host, or as a suffix to the path example maps.google.com, mail.inbox.com --><allow-navigation href="*://*.google.com/*" />