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<!DOCTYPE html>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/speculation-rules/prerender/resources/utils.js"></script>
<script>
assert_true(document.prerendering);
async function invokeScreenCaptureAPI(){
const bc = new PrerenderChannel('prerender-channel');
try {
await navigator.mediaDevices.getDisplayMedia();
bc.postMessage('unexpected success');
} catch (err){
bc.postMessage(err.name);
} finally {
bc.close();
}
}
invokeScreenCaptureAPI();
</script>