Use shared container to manage imports/exports.

src/symbol.js

 // Copyright 2013 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.
 
 // Expects following symbols to be set in the bootstrapper during genesis:
 // - symbolHasInstance
 // - symbolIsConcatSpreadable
 // - symbolIsRegExp
 // - symbolIterator
 // - symbolToStringTag
 // - symbolUnscopables
 
 var $symbolToString;
 
-(function(global, shared, exports) {
+(function(global, utils) {
 
 "use strict";
 
 %CheckIsBootstrapping();
 
 var GlobalObject = global.Object;
 var GlobalSymbol = global.Symbol;
 
 // -------------------------------------------------------------------
 
@@ skipping 82 matching lines @@
   "valueOf", SymbolValueOf
 ]);
 
 $installFunctions(GlobalObject, DONT_ENUM, [
   "getOwnPropertySymbols", ObjectGetOwnPropertySymbols
 ]);
 
 $symbolToString = SymbolToString;
 
 })