Rewrite Object.prototype.toString in C++

src/js/messages.js

Index: src/js/messages.js
diff --git a/src/js/messages.js b/src/js/messages.js
index e0d6a07daeec5fa3adbc7b97e107833810f4958b..87852e8ded1c60e90d14c018db89d51034aed0b6 100644
--- a/src/js/messages.js
+++ b/src/js/messages.js
@@ -35,7 +35,7 @@ var Int8x16ToString;
 var InternalArray = utils.InternalArray;
 var internalErrorSymbol = utils.ImportNow("internal_error_symbol");
 var ObjectDefineProperty;
-var ObjectToString;
+var ObjectToString = utils.ImportNow("object_to_string");
 var Script = utils.ImportNow("Script");
 var stackTraceSymbol = utils.ImportNow("stack_trace_symbol");
 var StringCharAt;
@@ -58,7 +58,6 @@ utils.Import(function(from) {
   Int32x4ToString = from.Int32x4ToString;
   Int8x16ToString = from.Int8x16ToString;
   ObjectDefineProperty = from.ObjectDefineProperty;
-  ObjectToString = from.ObjectToString;
   StringCharAt = from.StringCharAt;
   StringIndexOf = from.StringIndexOf;
   StringSubstring = from.StringSubstring;