Can I use application cache fallback for different hosts?

I have sample site:

/index.html
/appcache.manifest
/style.css
/test.js

index.html:

<!DOCTYPE HTML>
<html manifest="appcache.manifest">
<head>
    <link type="text/css" rel="stylesheet" href="style.css" />
</head>
<body>
    <div id="map"></div>
    <script type="text/javascript" src="http://maps.googleapis.com/maps/api/js?sensor=false"></script>
    <script>window.google && window.google.maps || console.info('Fail');</script>
</body>
</html>

appcache.manifest:

CACHE MANIFEST

NETWORK:
*

CACHE:
index.html
style.css
test.js

FALLBACK:
http://maps.googleapis.com/maps/api/js?sensor=false test.js

test.js:

window.google = window.google || {};
google.maps = google.maps || {};
console.info('I am work!!!')

When I open site first time on localhost without internet connection I see 'Fial' in console.

Can I use http://different_domain in application cache manifest fallback section and if I can what I doing wrong?

Solution

No, from the spec:

Fallback namespaces and fallback entries must have the same origin as the manifest itself.