Wrap harmony implementations in functions.

src/harmony-typedarray.js

 // Copyright 2014 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.
 
+(function() {
+
 "use strict";
 
-// This file relies on the fact that the following declaration has been made
-// in runtime.js:
-// var $Array = global.Array;
+%CheckIsBootstrapping();
 
 // -------------------------------------------------------------------
 
 macro TYPED_ARRAYS(FUNCTION)
 // arrayIds below should be synchronized with Runtime_TypedArrayInitialize.
 FUNCTION(1, Uint8Array, 1)
 FUNCTION(2, Int8Array, 1)
 FUNCTION(3, Uint16Array, 2)
 FUNCTION(4, Int16Array, 2)
 FUNCTION(5, Uint32Array, 4)
@@ skipping 45 matching lines @@
     array[i] = %_Arguments(i);
   }
   return array;
 }
 
 endmacro
 
 TYPED_ARRAYS(TYPED_ARRAY_HARMONY_ADDITIONS)
 
 
-function HarmonyTypedArrayExtendPrototypes() {
 macro EXTEND_TYPED_ARRAY(ARRAY_ID, NAME, ELEMENT_SIZE)
-  %CheckIsBootstrapping();
-
   // Set up non-enumerable functions on the object.
   InstallFunctions(global.NAME, DONT_ENUM | DONT_DELETE | READ_ONLY, [
     "of", NAMEOf
   ]);
 
   // Set up non-enumerable functions on the prototype object.
   InstallFunctions(global.NAME.prototype, DONT_ENUM, [
     "forEach", NAMEForEach
   ]);
 endmacro
 
-  TYPED_ARRAYS(EXTEND_TYPED_ARRAY)
-}
+TYPED_ARRAYS(EXTEND_TYPED_ARRAY)
 
-HarmonyTypedArrayExtendPrototypes();
+})();