Native context: debug.js does not load from js builtins object anymore.

src/json.js

 // Copyright 2009 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 (function(global, utils) {
 
 "use strict";
 
 %CheckIsBootstrapping();
 
 // -------------------------------------------------------------------
 // Imports
 
 var GlobalJSON = global.JSON;
 var InternalArray = utils.InternalArray;
-
 var MathMax;
 var MathMin;
 var ObjectHasOwnProperty;
+var ToNumber;
+var ToString;
 
 utils.Import(function(from) {
   MathMax = from.MathMax;
   MathMin = from.MathMin;
   ObjectHasOwnProperty = from.ObjectHasOwnProperty;
+  ToNumber = from.ToNumber;
+  ToString = from.ToString;
 });
 
 // -------------------------------------------------------------------
 
 function Revive(holder, name, reviver) {
   var val = holder[name];
   if (IS_OBJECT(val)) {
     if (IS_ARRAY(val)) {
       var length = val.length;
       for (var i = 0; i < length; i++) {
@@ skipping 120 matching lines @@
     return JSON_NUMBER_TO_STRING(value);
   } else if (IS_BOOLEAN(value)) {
     return value ? "true" : "false";
   } else if (IS_NULL(value)) {
     return "null";
   } else if (IS_SPEC_OBJECT(value) && !(typeof value == "function")) {
     // Non-callable object. If it's a primitive wrapper, it must be unwrapped.
     if (IS_ARRAY(value)) {
       return SerializeArray(value, replacer, stack, indent, gap);
     } else if (IS_NUMBER_WRAPPER(value)) {
-      value = $toNumber(value);
+      value = ToNumber(value);
       return JSON_NUMBER_TO_STRING(value);
     } else if (IS_STRING_WRAPPER(value)) {
-      return %QuoteJSONString($toString(value));
+      return %QuoteJSONString(ToString(value));
     } else if (IS_BOOLEAN_WRAPPER(value)) {
       return %_ValueOf(value) ? "true" : "false";
     } else {
       return SerializeObject(value, replacer, stack, indent, gap);
     }
   }
   // Undefined or a callable object.
   return UNDEFINED;
 }
 
 
 function JSONStringify(value, replacer, space) {
   if (%_ArgumentsLength() == 1) {
     return %BasicJSONStringify(value);
   }
   if (IS_ARRAY(replacer)) {
     // Deduplicate replacer array items.
     var property_list = new InternalArray();
     var seen_properties = { __proto__: null };
     var length = replacer.length;
     for (var i = 0; i < length; i++) {
       var v = replacer[i];
       var item;
       if (IS_STRING(v)) {
         item = v;
       } else if (IS_NUMBER(v)) {
         item = %_NumberToString(v);
       } else if (IS_STRING_WRAPPER(v) || IS_NUMBER_WRAPPER(v)) {
-        item = $toString(v);
+        item = ToString(v);
       } else {
         continue;
       }
       if (!seen_properties[item]) {
         property_list.push(item);
         seen_properties[item] = true;
       }
     }
     replacer = property_list;
   }
   if (IS_OBJECT(space)) {
     // Unwrap 'space' if it is wrapped
     if (IS_NUMBER_WRAPPER(space)) {
-      space = $toNumber(space);
+      space = ToNumber(space);
     } else if (IS_STRING_WRAPPER(space)) {
-      space = $toString(space);
+      space = ToString(space);
     }
   }
   var gap;
   if (IS_NUMBER(space)) {
     space = MathMax(0, MathMin($toInteger(space), 10));
     gap = %_SubString("          ", 0, space);
   } else if (IS_STRING(space)) {
     if (space.length > 10) {
       gap = %_SubString(space, 0, 10);
     } else {
@@ skipping 23 matching lines @@
   holder[key] = object;
   // No need to pass the actual holder since there is no replacer function.
   return JSONSerialize(key, holder, UNDEFINED, new InternalArray(), "", "");
 }
 
 utils.ExportToRuntime(function(to) {
   to.JsonSerializeAdapter = JsonSerializeAdapter;
 });
 
 })