Switch all LayoutTests to use new AX name calculation

third_party/WebKit/LayoutTests/fast/forms/resources/multiple-fields-ax-aria-attributes.js

 function focusedElementDescription()
 {
     var element = accessibilityController.focusedElement;
-    return element.deprecatedHelpText + ', ' +  element.valueDescription + ', intValue:' + element.intValue + ', range:'+ element.minValue + '-' + element.maxValue;
+    return element.description + ', ' +  element.valueDescription + ', intValue:' + element.intValue + ', range:'+ element.minValue + '-' + element.maxValue;
 }
 
 function checkFocusedElementAXAttributes(expected) {
     shouldBeEqualToString('focusedElementDescription()', expected);
 }