ES6: Remove __proto__ setter poison pill

src/v8natives.js

Index: src/v8natives.js
diff --git a/src/v8natives.js b/src/v8natives.js
index 96b88c5285c9962d479fa75d0e71031cd0c35b6c..8adb9d673b27f1d499a77c7d5b60684351db193d 100644
--- a/src/v8natives.js
+++ b/src/v8natives.js
@@ -388,8 +388,7 @@ function FromPropertyDescriptor(desc) {
   }
   // Must be an AccessorDescriptor then. We never return a generic descriptor.
   return { get: desc.getGet(),
-           set: desc.getSet() === ObjectSetProto ? ObjectPoisonProto
-                                                 : desc.getSet(),
+           set: desc.getSet(),
            enumerable: desc.isEnumerable(),
            configurable: desc.isConfigurable() };
 }
@@ -1362,12 +1361,6 @@ function ObjectSetProto(obj) {
 }
 
 
-// Harmony __proto__ poison pill.
-function ObjectPoisonProto(obj) {
-  throw MakeTypeError("proto_poison_pill", []);
-}
-
-
 function ObjectConstructor(x) {
   if (%_IsConstructCall()) {
     if (x == null) return this;
@@ -1387,8 +1380,6 @@ function SetUpObject() {
 
   %SetNativeFlag($Object);
   %SetCode($Object, ObjectConstructor);
-  %FunctionSetName(ObjectPoisonProto, "__proto__");
-  %FunctionRemovePrototype(ObjectPoisonProto);
   %SetExpectedNumberOfProperties($Object, 4);
 
   %SetProperty($Object.prototype, "constructor", $Object, DONT_ENUM);