Revert of [es6] Map/Set size getter should have "get size" name

test/mjsunit/es6/built-in-accessor-names.js

-// 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.
-
-'use strict';
-
-function assertGetterName(expected, object, name) {
-  var descr = Object.getOwnPropertyDescriptor(object, name);
-  assertSame(expected, descr.get.name);
-}
-
-
-function assertSetterName(expected, object, name) {
-  var descr = Object.getOwnPropertyDescriptor(object, name);
-  assertSame(expected, descr.set.name);
-}
-
-
-assertGetterName('get byteLength', ArrayBuffer.prototype, 'byteLength');
-assertGetterName('get size', Set.prototype, 'size');
-assertGetterName('get size', Map.prototype, 'size');
-
-
-let typedArrays = [
-  Uint8Array,
-  Int8Array,
-  Uint16Array,
-  Int16Array,
-  Uint32Array,
-  Int32Array,
-  Float32Array,
-  Float64Array,
-  Uint8ClampedArray
-];
-
-for (let f of typedArrays) {
-  assertGetterName('get buffer', f.prototype, 'buffer');
-  assertGetterName('get byteOffset', f.prototype, 'byteOffset');
-  assertGetterName('get byteLength', f.prototype, 'byteLength');
-  assertGetterName('get length', f.prototype, 'length');
-  assertGetterName('get [Symbol.toStringTag]', f.prototype, Symbol.toStringTag);
-}
-
-
-assertGetterName('get buffer', DataView.prototype, 'buffer');
-assertGetterName('get byteOffset', DataView.prototype, 'byteOffset');
-assertGetterName('get byteLength', DataView.prototype, 'byteLength');
-
-
-assertGetterName('get __proto__', Object.prototype, '__proto__');
-assertSetterName('set __proto__', Object.prototype, '__proto__');