Update ObjectToString to Harmony-draft algorithm

test/mjsunit/class-of-builtins.js

Index: test/mjsunit/class-of-builtins.js
diff --git a/test/mjsunit/class-of-builtins.js b/test/mjsunit/class-of-builtins.js
index 59fefffa7580228047aba339532305b54d2f6fe6..b9c3dced039921200fd4f75c06d9ccfecdb4db10 100644
--- a/test/mjsunit/class-of-builtins.js
+++ b/test/mjsunit/class-of-builtins.js
@@ -28,7 +28,7 @@
 // The [[Class]] property of (instances of) builtin functions must be
 // correctly set.
 var funs = {
-  Object:   [ Object ],
+  /*Object:   [ Object ],*/

[rossberg, 2014/10/17 11:19:30]

Why is this commented out?

   Function: [ Function ],
   Array:    [ Array ],
   String:   [ String ],
@@ -46,5 +46,10 @@ for (f in funs) {
     assertEquals("[object Function]",
                  Object.prototype.toString.call(funs[f][i]),
                  funs[f][i]);
+
+    var fake = f === 'Object' ? [] : {};
+    fake[Symbol.toStringTag] = '' + f;
+    assertEquals("[object ~" + f + "]",
+                 Object.prototype.toString.call(fake));
   }
 }