Clean up native context slots and add new ones.

src/messages.js

 // Copyright 2012 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.
 
 // -------------------------------------------------------------------
 
 var $errorToString;
 var $getStackTraceLine;
 var $internalErrorSymbol;
 var $messageGetPositionInLine;
 var $messageGetLineNumber;
 var $messageGetSourceLine;
-var $noSideEffectToString;
 var $stackOverflowBoilerplate;
 var $stackTraceSymbol;
-var $toDetailString;
-var $Error;
-var $EvalError;
-var $RangeError;
-var $ReferenceError;
-var $SyntaxError;
-var $TypeError;
-var $URIError;
 var MakeError;
 var MakeEvalError;
 var MakeRangeError;
 var MakeReferenceError;
 var MakeSyntaxError;
 var MakeTypeError;
 var MakeURIError;
 
 (function(global, utils) {
 
@@ skipping 977 matching lines @@
   return %ErrorToStringRT(this);
 }
 
 utils.InstallFunctions(GlobalError.prototype, DONT_ENUM,
                        ['toString', ErrorToString]);
 
 $errorToString = ErrorToString;
 $messageGetPositionInLine = GetPositionInLine;
 $messageGetLineNumber = GetLineNumber;
 $messageGetSourceLine = GetSourceLine;
-$noSideEffectToString = NoSideEffectToString;
-$toDetailString = ToDetailString;
-
-$Error = GlobalError;
-$EvalError = GlobalEvalError;
-$RangeError = GlobalRangeError;
-$ReferenceError = GlobalReferenceError;
-$SyntaxError = GlobalSyntaxError;
-$TypeError = GlobalTypeError;
-$URIError = GlobalURIError;
 
 MakeError = function(type, arg0, arg1, arg2) {
   return MakeGenericError(GlobalError, type, arg0, arg1, arg2);
 }
 
 MakeEvalError = function(type, arg0, arg1, arg2) {
   return MakeGenericError(GlobalEvalError, type, arg0, arg1, arg2);
 }
 
 MakeRangeError = function(type, arg0, arg1, arg2) {
@@ skipping 28 matching lines @@
   // Define accessors first, as this may fail and throw.
   ObjectDefineProperty(obj, 'stack', { get: StackTraceGetter,
                                        set: StackTraceSetter,
                                        configurable: true });
   %CollectStackTrace(obj, cons_opt ? cons_opt : captureStackTrace);
 };
 
 GlobalError.captureStackTrace = captureStackTrace;
 
 utils.ExportToRuntime(function(to) {
+  to.Error = GlobalError;
+  to.EvalError = GlobalEvalError;
+  to.RangeError = GlobalRangeError;
+  to.ReferenceError = GlobalReferenceError;
+  to.SyntaxError = GlobalSyntaxError;
+  to.TypeError = GlobalTypeError;
+  to.URIError = GlobalURIError;
   to.GetStackTraceLine = GetStackTraceLine;
+  to.NoSideEffectToString = NoSideEffectToString;
+  to.ToDetailString = ToDetailString;
 });
 
 });