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<html> <script> // A smoke test to call requestMIDIAccess From ContentBrowserTest. // We cannot check result since it relies on the availability of system level // MIDI on the test runner. var error_message = ""; navigator.requestMIDIAccess().then( _ => { document.title = "pass" }, e => { error_message = e.message; document.title = "fail"; }); </script> </html>