Hook up more import/exports in natives.

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, utils) {
 
 "use strict";
 
 %CheckIsBootstrapping();
 
+// -------------------------------------------------------------------
+// Imports
+
 var GlobalObject = global.Object;
 var GlobalSymbol = global.Symbol;
 
+var ObjectGetOwnPropertyKeys;
+
+utils.Import(function(from) {
+  ObjectGetOwnPropertyKeys = from.ObjectGetOwnPropertyKeys;
+});
+
 // -------------------------------------------------------------------
 
 function SymbolConstructor(x) {
   if (%_IsConstructCall()) throw MakeTypeError(kNotConstructor, "Symbol");
   // NOTE: Passing in a Symbol value will throw on ToString().
   return %CreateSymbol(IS_UNDEFINED(x) ? x : $toString(x));
 }
 
 
 function SymbolToString() {
@@ skipping 32 matching lines @@
   return %SymbolRegistry().keyFor[symbol];
 }
 
 
 // ES6 19.1.2.8
 function ObjectGetOwnPropertySymbols(obj) {
   obj = $toObject(obj);
 
   // TODO(arv): Proxies use a shared trap for String and Symbol keys.
 
-  return $objectGetOwnPropertyKeys(obj, PROPERTY_ATTRIBUTES_STRING);
+  return ObjectGetOwnPropertyKeys(obj, PROPERTY_ATTRIBUTES_STRING);
 }
 
 //-------------------------------------------------------------------
 
 %SetCode(GlobalSymbol, SymbolConstructor);
 %FunctionSetPrototype(GlobalSymbol, new GlobalObject());
 
-$installConstants(GlobalSymbol, [
+utils.InstallConstants(GlobalSymbol, [
   // TODO(rossberg): expose when implemented.
   // "hasInstance", symbolHasInstance,
   // "isConcatSpreadable", symbolIsConcatSpreadable,
   // "isRegExp", symbolIsRegExp,
   "iterator", symbolIterator,
   // TODO(dslomov, caitp): Currently defined in harmony-tostring.js ---
   // Move here when shipping
   // "toStringTag", symbolToStringTag,
   "unscopables", symbolUnscopables
 ]);
 
-$installFunctions(GlobalSymbol, DONT_ENUM, [
+utils.InstallFunctions(GlobalSymbol, DONT_ENUM, [
   "for", SymbolFor,
   "keyFor", SymbolKeyFor
 ]);
 
 %AddNamedProperty(
     GlobalSymbol.prototype, "constructor", GlobalSymbol, DONT_ENUM);
 %AddNamedProperty(
     GlobalSymbol.prototype, symbolToStringTag, "Symbol", DONT_ENUM | READ_ONLY);
 
-$installFunctions(GlobalSymbol.prototype, DONT_ENUM, [
+utils.InstallFunctions(GlobalSymbol.prototype, DONT_ENUM, [
   "toString", SymbolToString,
   "valueOf", SymbolValueOf
 ]);
 
-$installFunctions(GlobalObject, DONT_ENUM, [
+utils.InstallFunctions(GlobalObject, DONT_ENUM, [
   "getOwnPropertySymbols", ObjectGetOwnPropertySymbols
 ]);
 
 $symbolToString = SymbolToString;
 
 })