test(input): use VALIDITY_STATE_PROPERTY when detecting if an input hasNativeValidators

Author: jbedard

src/ng/directive/input.js

@@ -1371,7 +1371,7 @@ function createDateInputType(type, regexp, parseDate, format) {
 
 function badInputChecker(scope, element, attr, ctrl) {
   var node = element[0];
-  var nativeValidation = ctrl.$$hasNativeValidators = isObject(node.validity);
+  var nativeValidation = ctrl.$$hasNativeValidators = isObject(node[VALIDITY_STATE_PROPERTY]);
   if (nativeValidation) {
     ctrl.$parsers.push(function(value) {
       var validity = element.prop(VALIDITY_STATE_PROPERTY) || {};