What did you do? I dropped it directly onto the view and nothing is working.
I open my Widows explorer, minimized both windows and dragged the JSon onto the picture in City viewer, an voila. Took a few goes though.
Doesn't work for me.
I get this:
The devicemotion events are blocked by feature policy.
window.addEventListener("devicemotion",$bind(this,this.handleSensorEvent),false);