[builtins] Migrate SharedArrayBuffer.byteLength to C++.

src/js/harmony-sharedarraybuffer.js

Index: src/js/harmony-sharedarraybuffer.js
diff --git a/src/js/harmony-sharedarraybuffer.js b/src/js/harmony-sharedarraybuffer.js
deleted file mode 100644
index 10ceb70d27b739d434eb3dc1c5f88755a81ddfbb..0000000000000000000000000000000000000000
--- a/src/js/harmony-sharedarraybuffer.js
+++ /dev/null
@@ -1,31 +0,0 @@
-// Copyright 2015 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();
-
-var GlobalSharedArrayBuffer = global.SharedArrayBuffer;
-var MakeTypeError;
-
-utils.Import(function(from) {
-  MakeTypeError = from.MakeTypeError;
-})
-
-// -------------------------------------------------------------------
-
-function SharedArrayBufferGetByteLen() {
-  if (!IS_SHAREDARRAYBUFFER(this)) {
-    throw MakeTypeError(kIncompatibleMethodReceiver,
-                        'SharedArrayBuffer.prototype.byteLength', this);
-  }
-  return %_ArrayBufferGetByteLength(this);
-}
-
-utils.InstallGetter(GlobalSharedArrayBuffer.prototype, "byteLength",
-                    SharedArrayBufferGetByteLen);
-
-})