[Test] Reconfigure SuperSpread benchmarks to run in separate processes.

test/js-perf-test/SixSpeed/super_spread/babel.js

+// Copyright 2017 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.
+
+// This benchmark is based on the six-speed benchmark build output.
+// Copyright 2014 Kevin Decker <https://github.com/kpdecker/six-speed/>
+
+load('../../base.js');
+
+new BenchmarkSuite('Babel', [1000], [
+  new Benchmark('Babel', false, false, 0, Babel),
+]);
+
+function _possibleConstructorReturn(self, call) {
+  if (!self) {
+    throw new ReferenceError(
+        'this hasn\'t been initialised - super() hasn\'t been called');
+  }
+  return call && (typeof call === 'object' || typeof call === 'function') ?
+      call :
+      self;
+}
+
+function _inherits(subClass, superClass) {
+  if (typeof superClass !== 'function' && superClass !== null) {
+    throw new TypeError(
+        'Super expression must either be null or a function, not ' +
+        typeof superClass);
+  }
+  subClass.prototype = Object.create(superClass && superClass.prototype, {
+    constructor: {
+      value: subClass,
+      enumerable: false,
+      writable: true,
+      configurable: true
+    }
+  });
+  if (superClass)
+    Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) :
+                            subClass.__proto__ = superClass;
+}
+
+function _classCallCheck(instance, Constructor) {
+  if (!(instance instanceof Constructor)) {
+    throw new TypeError('Cannot call a class as a function');
+  }
+}
+
+var Point = function Point(x, y) {
+  _classCallCheck(this, Point);
+
+  this.x = x;
+  this.y = y;
+};
+
+var MyPoint = function(_Point) {
+  _inherits(MyPoint, _Point);
+
+  function MyPoint() {
+    _classCallCheck(this, MyPoint);
+
+    return _possibleConstructorReturn(
+        this, (MyPoint.__proto__ || Object.getPrototypeOf(MyPoint))
+                  .apply(this, arguments));
+  }
+
+  return MyPoint;
+}(Point);
+
+function makePoint(x, y) {
+  return new MyPoint(x, y);
+}
+
+function Babel() {
+  'use strict';
+  return makePoint(1, 2);
+}
+
+load('run.js');