[js-perf-tests] Add super benchmarks from SixSpeed.

test/js-perf-test/SixSpeed/super/es5.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/>
+
+new BenchmarkSuite('ES5', [1000], [
+  new Benchmark('ES5', false, false, 0, ES5),
+]);
+
+function C() {
+  this.foo = 'bar';
+}
+
+C.prototype.bar = function() {
+  return 41;
+};
+
+function D() {
+  C.call(this);
+  this.baz = 'bat';
+}
+
+D.prototype = Object.create(C.prototype);
+
+D.prototype.bar = function() {
+  return C.prototype.bar.call(this) + 1;
+};
+
+function ES5() {
+  var d = new D();
+  return d.bar();
+}