Fix issue with __proto__ when using ES6 object literals

test/mjsunit/harmony/object-literals-method.js

Index: test/mjsunit/harmony/object-literals-method.js
diff --git a/test/mjsunit/harmony/object-literals-method.js b/test/mjsunit/harmony/object-literals-method.js
index 71f44d10bc7ea65679699b904a1e1c02cd6a6ddc..605e269fcb08f4f72d08e732200c2192a1ca508f 100644
--- a/test/mjsunit/harmony/object-literals-method.js
+++ b/test/mjsunit/harmony/object-literals-method.js
@@ -246,3 +246,27 @@ function assertIteratorResult(value, done, result) {
   };
   assertEquals('*method() { yield 1; }', object.method.toString());
 })();
+
+
+(function TestProtoName() {
+  var object = {
+    __proto__() {
+      return 1;
+    }
+  };
+  assertEquals(Object.prototype, Object.getPrototypeOf(object));
+  assertEquals(1, object.__proto__());
+})();
+
+
+(function TestProtoName2() {
+  var p = {};
+  var object = {
+    __proto__() {
+      return 1;
+    },
+    __proto__: p
+  };
+  assertEquals(p, Object.getPrototypeOf(object));
+  assertEquals(1, object.__proto__());
+})();