Not sure.  Does this look right?
<b>Inspector.js:</b>
```javascript
Inspector._onDisconnect() {
  ...triggerHandler('disconnect');
}
``` 
<b>LiveDevelopment.js:</b>
```javascript
function _onConnect(event) {
  ...
  $(Inspector).on('disconnect.livedev', _onDisconnect);
  ...
}
```