Code review comment for lp:~michael-sheldon/webbrowser-app/file-upload

I’m seeing an issue that I can reliably reproduce:

 - open a page that has an input="file" widget (I’m using http://www.html5rocks.com/en/tutorials/file/dndfiles/), click the button to pick content
 - choose the gallery app, select a picture, then click "Pick", you’re back to the browser and the picture has been selected in the input widget
 - click the button again to e.g. pick another picture
 - choose the gallery app

Expected result: the gallery app opens and I can pick a picture
Current result: I get a small dialog with a spinner that never goes away (if however in the meantime I went to the dash and manually closed the gallery app, then the issue cannot be observed)