FIX: Send Touch actions to the proper window

This allows:

```
...
  <FullScreenVideo>
    <touch>
      <swipeleft>StepBack</swipeleft>
      <swiperight>StepForward</swiperight>
      <swipeup>BigStepForward</swipeup>
      <swipedown>BigStepBack</swipedown>
    </touch>
  </FullScreenVideo>
...
```