Revert of Protect the emptiness of Array prototype elements with a PropertyCell.

src/isolate.h

Index: src/isolate.h
diff --git a/src/isolate.h b/src/isolate.h
index cbe30dc14e5ce14490f68eaf635451f1204d835a..a434edd440c68c4b9d48d93c07a2a16aa9ec344d 100644
--- a/src/isolate.h
+++ b/src/isolate.h
@@ -1015,21 +1015,6 @@
   Map* get_initial_js_array_map(ElementsKind kind);
 
   bool IsFastArrayConstructorPrototypeChainIntact();
-
-  // On intent to set an element in object, make sure that appropriate
-  // notifications occur if the set is on the elements of the array or
-  // object prototype. Also ensure that changes to prototype chain between
-  // Array and Object fire notifications.
-  void UpdateArrayProtectorOnSetElement(Handle<JSObject> object);
-  void UpdateArrayProtectorOnSetPrototype(Handle<JSObject> object) {
-    UpdateArrayProtectorOnSetElement(object);
-  }
-  void UpdateArrayProtectorOnNormalizeElements(Handle<JSObject> object) {
-    UpdateArrayProtectorOnSetElement(object);
-  }
-
-  // Returns true if array is the initial array prototype in any native context.
-  bool IsAnyInitialArrayPrototype(Handle<JSArray> array);
 
   CallInterfaceDescriptorData* call_descriptor_data(int index);