Use shared container to manage imports/exports.

src/math.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 rngstate;  // Initialized to a Uint32Array during genesis.
 
-var $abs;
-var $exp;
-var $floor;
-var $max;
-var $min;
-
-(function(global, shared, exports) {
+(function(global, utils) {
 
 "use strict";
 
 %CheckIsBootstrapping();
 
 // -------------------------------------------------------------------
 // Imports
 
 var GlobalObject = global.Object;
-var InternalArray = shared.InternalArray;
+var InternalArray = utils.InternalArray;
 
 //-------------------------------------------------------------------
 
 // ECMA 262 - 15.8.2.1
 function MathAbs(x) {
   x = +x;
   return (x > 0) ? x : 0 - x;
 }
 
 // ECMA 262 - 15.8.2.2
@@ skipping 316 matching lines @@
 %SetInlineBuiltinFlag(MathAtanJS);
 %SetInlineBuiltinFlag(MathAtan2JS);
 %SetInlineBuiltinFlag(MathCeil);
 %SetInlineBuiltinFlag(MathClz32JS);
 %SetInlineBuiltinFlag(MathFloorJS);
 %SetInlineBuiltinFlag(MathRandom);
 %SetInlineBuiltinFlag(MathSign);
 %SetInlineBuiltinFlag(MathSqrtJS);
 %SetInlineBuiltinFlag(MathTrunc);
 
-// Expose to the global scope.
-$abs = MathAbs;
-$exp = MathExp;
-$floor = MathFloorJS;
-$max = MathMax;
-$min = MathMin;
+// -------------------------------------------------------------------
+// Exports
+
+utils.Export(function(to) {
+  to.MathAbs = MathAbs;
+  to.MathExp = MathExp;
+  to.MathFloor = MathFloorJS;
+  to.MathMax = MathMax;
+  to.MathMin = MathMin;
+});
 
 })