nsIDOMFileList interface contains a list of
nsIDOMFile objects describing the files selected by the user for a "file" input field on a web form.
Gecko 1.9.2 note
Starting in Gecko 1.9.2, this is also used by the
DataTransferobject to support dragging and dropping files into web applications.
This interface implements the DOM
FileList object. Please see that documentation for details.