Update feature detection to account for browsers that do not fire syn…

…thetic events on disabled elements

dom/events/events.js

@@ -54,14 +54,22 @@ module.exports = {
 };
 
 // In FireFox, dispatching a synthetic event on a disabled element throws an error.
+// Other browsers, like IE 10 do not dispatch synthetic events on disabled elements at all.
 // This determines if we have to work around that when dispatching events.
 // https://bugzilla.mozilla.org/show_bug.cgi?id=329509
 (function() {
 	var input = document.createElement("input");
 	input.disabled = true;
+	var timer = setTimeout(function() {
+		fixSyntheticEventsOnDisabled = true;
+	}, 50);
+	module.exports.addEventListener.call(input, 'foo', function(){
+		clearTimeout(timer);
+	});
 	try {
 		module.exports.dispatch.call(input, 'foo', [], false);
 	} catch(e) {
+		clearTimeout(timer);
 		fixSyntheticEventsOnDisabled = true;
 	}
 })();

dom/events/inserted/inserted-test.js

@@ -42,7 +42,7 @@ function runTest(name, MUT_OBS) {
 		// There is a setTimeout, 0 in the non-mutation observer code path
 		setTimeout(function(){
 			domMutate.appendChild.call(document.getElementById("qunit-fixture"), input);
-		}, 20);
+		}, 50);
 	});
 	asyncTest("parent then child inserted - appendChild", function () {
 		expect(1);