[json] implement InternalizeJSONProperty in C++.

src/js/json.js

Index: src/js/json.js
diff --git a/src/js/json.js b/src/js/json.js
index a7b692000870b1722be6d914383559675eed23f1..16f55c5cd80a2b5438a132b20226d509a66f430c 100644
--- a/src/js/json.js
+++ b/src/js/json.js
@@ -19,50 +19,8 @@ var toStringTagSymbol = utils.ImportNow("to_string_tag_symbol");
 
 // -------------------------------------------------------------------
 
-function CreateDataProperty(o, p, v) {
-  var desc = {value: v, enumerable: true, writable: true, configurable: true};
-  return %reflect_define_property(o, p, desc);
-}
-
-
-function InternalizeJSONProperty(holder, name, reviver) {
-  var val = holder[name];
-  if (IS_RECEIVER(val)) {
-    if (%is_arraylike(val)) {
-      var length = TO_LENGTH(val.length);
-      for (var i = 0; i < length; i++) {
-        var newElement =
-            InternalizeJSONProperty(val, %_NumberToString(i), reviver);
-        if (IS_UNDEFINED(newElement)) {
-          %reflect_delete_property(val, i);
-        } else {
-          CreateDataProperty(val, i, newElement);
-        }
-      }
-    } else {
-      var keys = %object_keys(val);
-      for (var i = 0; i < keys.length; i++) {
-        var p = keys[i];
-        var newElement = InternalizeJSONProperty(val, p, reviver);
-        if (IS_UNDEFINED(newElement)) {
-          %reflect_delete_property(val, p);
-        } else {
-          CreateDataProperty(val, p, newElement);
-        }
-      }
-    }
-  }
-  return %_Call(reviver, holder, name, val);
-}
-
-
 function JSONParse(text, reviver) {
-  var unfiltered = %ParseJson(text);
-  if (IS_CALLABLE(reviver)) {
-    return InternalizeJSONProperty({'': unfiltered}, '', reviver);
-  } else {
-    return unfiltered;
-  }
+  return %ParseJson(text, reviver);
 }
 
 // -------------------------------------------------------------------