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

Just so you're aware, there'll also be a few warnings about height bindings from the ContentTransferHint when a transfer is in progress. This is due to the ContentTransferHint being a dialog which is then being embedded in another dialog (the ContentPickerDialog), but I'm not sure there's any way around this due to the browser needing the file picker to be a dialog.