<!doctype html>
<html>
<head>
<title>Test AudioContextManager Audible Playback</title>
</head>
<body>
<script>
let context = new AudioContext();
let osc = new OscillatorNode(context);
// Set initial gain to 0 to make sure we start with silence.
let gain = new GainNode(context, {gain: 0});
// Connect everything and start the oscillator. The browser test will set the gain value as
// needed to test if the messages are being sent.
osc.connect(gain).connect(context.destination);
osc.start();
</script>
</body>
</html>