XHR2 file upload + jQuery deferred

gistfile1.js

var uploadFormAndFile = function(form, file) {
	
	var formData = new FormData();
	formData.append("email", form.email);
	formData.append("name", form.name);
	formData.append("thumbnail", file);

	var uploadDeferred  = $.Deferred(),
	    xhr             = new XMLHttpRequest();

	xhr.open('POST', "http://some.url/upload", true);
	xhr.addEventListener("progress", function(event) {
		uploadDeferred.notify(event);
	});
	xhr.addEventListener("load", function(event) {
		uploadDeferred.resolve(event);
	});
	xhr.addEventListener("error", function(event) {
		uploadDeferred.reject(event);
	});

	// Send request
	xhr.send(formData);

	return uploadDeferred.promise();
}