Use ES2015-style TypedArray prototype chain

src/js/array-iterator.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.
 
 (function(global, utils) {
 
 "use strict";
 
 %CheckIsBootstrapping();
 
 // -----------------------------------------------------------------------
 // Imports
 
 var arrayIterationKindSymbol =
     utils.ImportNow("array_iteration_kind_symbol");
 var arrayIteratorNextIndexSymbol =
     utils.ImportNow("array_iterator_next_symbol");
 var arrayIteratorObjectSymbol =
     utils.ImportNow("array_iterator_object_symbol");
 var GlobalArray = global.Array;
 var IteratorPrototype = utils.ImportNow("IteratorPrototype");
 var iteratorSymbol = utils.ImportNow("iterator_symbol");
 var MakeTypeError;
 var toStringTagSymbol = utils.ImportNow("to_string_tag_symbol");
-
-macro TYPED_ARRAYS(FUNCTION)
-  FUNCTION(Uint8Array)
-  FUNCTION(Int8Array)
-  FUNCTION(Uint16Array)
-  FUNCTION(Int16Array)
-  FUNCTION(Uint32Array)
-  FUNCTION(Int32Array)
-  FUNCTION(Float32Array)
-  FUNCTION(Float64Array)
-  FUNCTION(Uint8ClampedArray)
-endmacro
-
-macro COPY_FROM_GLOBAL(NAME)
-  var GlobalNAME = global.NAME;
-endmacro
-
-TYPED_ARRAYS(COPY_FROM_GLOBAL)
+var GlobalTypedArray = global.Uint8Array.__proto__;
 
 utils.Import(function(from) {
   MakeTypeError = from.MakeTypeError;
 })
 
 // -----------------------------------------------------------------------
 
 function ArrayIterator() {}
 
 
@@ skipping 92 matching lines @@
   'keys', ArrayKeys
 ]);
 
 // TODO(adam): Remove this call once 'values' is in the above
 // InstallFunctions block, as it'll be redundant.
 utils.SetFunctionName(ArrayValues, 'values');
 
 %AddNamedProperty(GlobalArray.prototype, iteratorSymbol, ArrayValues,
                   DONT_ENUM);
 
-macro EXTEND_TYPED_ARRAY(NAME)
-  %AddNamedProperty(GlobalNAME.prototype, 'entries', ArrayEntries, DONT_ENUM);
-  %AddNamedProperty(GlobalNAME.prototype, 'values', ArrayValues, DONT_ENUM);
-  %AddNamedProperty(GlobalNAME.prototype, 'keys', ArrayKeys, DONT_ENUM);
-  %AddNamedProperty(GlobalNAME.prototype, iteratorSymbol, ArrayValues,
-                    DONT_ENUM);
-endmacro
-
-TYPED_ARRAYS(EXTEND_TYPED_ARRAY)
+%AddNamedProperty(GlobalTypedArray.prototype,
+                  'entries', ArrayEntries, DONT_ENUM);
+%AddNamedProperty(GlobalTypedArray.prototype, 'values', ArrayValues, DONT_ENUM);
+%AddNamedProperty(GlobalTypedArray.prototype, 'keys', ArrayKeys, DONT_ENUM);
+%AddNamedProperty(GlobalTypedArray.prototype,
+                  iteratorSymbol, ArrayValues, DONT_ENUM);
 
 // -------------------------------------------------------------------
 // Exports
 
 utils.Export(function(to) {
   to.ArrayValues = ArrayValues;
 });
 
 %InstallToContext(["array_values_iterator", ArrayValues]);
 
 })