ES6: Remove __proto__ setter poison pill

src/v8natives.js

Index: src/v8natives.js
diff --git a/src/v8natives.js b/src/v8natives.js
index b0b66e760b32118be5876b223a3292844a0ae439..9208ed3a4abc5e9512a8c4b168f2c88ded075b16 100644
--- a/src/v8natives.js
+++ b/src/v8natives.js
@@ -403,8 +403,7 @@ 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() };
 }
@@ -1403,12 +1402,6 @@ 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;
@@ -1428,8 +1421,6 @@ function SetUpObject() {
 
   %SetNativeFlag($Object);
   %SetCode($Object, ObjectConstructor);
-  %FunctionSetName(ObjectPoisonProto, "__proto__");
-  %FunctionRemovePrototype(ObjectPoisonProto);
   %SetExpectedNumberOfProperties($Object, 4);
 
   %SetProperty($Object.prototype, "constructor", $Object, DONT_ENUM);