[es6] support `get` and `set` in shorthand properties

test/mjsunit/es6/object-literals-property-shorthand.js

Index: test/mjsunit/es6/object-literals-property-shorthand.js
diff --git a/test/mjsunit/es6/object-literals-property-shorthand.js b/test/mjsunit/es6/object-literals-property-shorthand.js
index 29ce66d270839e861751b7f0205ef74712bc58f5..f0ddd68d42aad0bc3edaed5177edf98fb519d0e1 100644
--- a/test/mjsunit/es6/object-literals-property-shorthand.js
+++ b/test/mjsunit/es6/object-literals-property-shorthand.js
@@ -10,6 +10,14 @@
 })();
 
 
+(function TestBasicsGetSet() {
+  var get = 1, set = 2;
+  var object = {get, set};
+  assertEquals(1, object.get);
+  assertEquals(2, object.set);
+})();
+
+
 (function TestDescriptor() {
   var x = 1;
   var object = {x};