[builtins] Migrate ArrayBufferPrototypeByteLength to C++.

src/js/arraybuffer.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 GlobalArrayBuffer = global.ArrayBuffer;
 var MakeTypeError;
 var MaxSimple;
 var MinSimple;
 var SpeciesConstructor;
 var speciesSymbol = utils.ImportNow("species_symbol");
 
 utils.Import(function(from) {
   MakeTypeError = from.MakeTypeError;
   MaxSimple = from.MaxSimple;
   MinSimple = from.MinSimple;
   SpeciesConstructor = from.SpeciesConstructor;
 });
 
 // -------------------------------------------------------------------
 
-function ArrayBufferGetByteLen() {
-  if (!IS_ARRAYBUFFER(this)) {
-    throw MakeTypeError(kIncompatibleMethodReceiver,
-                        'ArrayBuffer.prototype.byteLength', this);
-  }
-  return %_ArrayBufferGetByteLength(this);
-}
-
 // ES6 Draft 15.13.5.5.3
 function ArrayBufferSlice(start, end) {
   if (!IS_ARRAYBUFFER(this)) {
     throw MakeTypeError(kIncompatibleMethodReceiver,
                         'ArrayBuffer.prototype.slice', this);
   }
 
   var relativeStart = TO_INTEGER(start);
   if (!IS_UNDEFINED(end)) {
     end = TO_INTEGER(end);
@@ skipping 37 matching lines @@
   return result;
 }
 
 
 function ArrayBufferSpecies() {
   return this;
 }
 
 utils.InstallGetter(GlobalArrayBuffer, speciesSymbol, ArrayBufferSpecies);
 
-utils.InstallGetter(GlobalArrayBuffer.prototype, "byteLength",
-                    ArrayBufferGetByteLen);
-
 utils.InstallFunctions(GlobalArrayBuffer.prototype, DONT_ENUM, [
   "slice", ArrayBufferSlice
 ]);
 
 })