Do not use user-defined __lookupGetter__ when generating stack trace.

src/messages.js

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 841 matching lines @@
        %_CallFunction(this.receiver,
                       ownName,
                       ObjectLookupSetter) === this.fun ||
        this.receiver[ownName] === this.fun)) {
     // To handle DontEnum properties we guess that the method has
     // the same name as the function.
     return ownName;
   }
   var name = null;
   for (var prop in this.receiver) {
-    if (this.receiver.__lookupGetter__(prop) === this.fun ||
-        this.receiver.__lookupSetter__(prop) === this.fun ||
-        (!this.receiver.__lookupGetter__(prop) &&
+    if (%_CallFunction(this.receiver, prop, ObjectLookupGetter) === this.fun ||
+        %_CallFunction(this.receiver, prop, ObjectLookupSetter) === this.fun ||
+        (!%_CallFunction(this.receiver, prop, ObjectLookupGetter) &&
          this.receiver[prop] === this.fun)) {
       // If we find more than one match bail out to avoid confusion.
       if (name) {
         return null;
       }
       name = prop;
     }
   }
   if (name) {
     return name;
@@ skipping 384 matching lines @@
     throw e;
   }
 }
 
 
 InstallFunctions($Error.prototype, DONT_ENUM, ['toString', ErrorToString]);
 
 // Boilerplate for exceptions for stack overflows. Used from
 // Isolate::StackOverflow().
 var kStackOverflowBoilerplate = MakeRangeError('stack_overflow', []);