testing/web-platform/tests/battery-status/support-window-open.html


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<!DOCTYPE HTML>
<meta charset="utf-8">
<script>
var data = [
    navigator === window.opener.navigator,
    navigator.getBattery() === window.opener.navigator.getBattery(),
    navigator.getBattery() === navigator.getBattery()
];
window.opener.postMessage(data, '*');
</script>