Use ES2015-style TypedArray prototype chain

src/js/array-iterator.js

Index: src/js/array-iterator.js
diff --git a/src/js/array-iterator.js b/src/js/array-iterator.js
index 7170cba9148bb05472e05436b1112d4fb75e28f4..2609ebdd73622143eb78d298aa557b02707908d6 100644
--- a/src/js/array-iterator.js
+++ b/src/js/array-iterator.js
@@ -22,24 +22,7 @@ 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;
@@ -152,15 +135,12 @@ 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