[es6] add js-perf-test for rest parameters

test/js-perf-test/RestParameters/rest.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.
+
+new BenchmarkSuite('Basic', [1000], [

[Michael Achenbach, 2015/09/10 12:24:48]

s/Basic/BasicRest1 in the suite name to match the name in

https://codereview.chromium.org/1317113007/diff/60001/test/js-perf-test/JSTes...
line 21

Currently the test result can't be read.

+  new Benchmark('BasicRest1', false, false, 0,
+                BasicRest1, BasicRest1Setup, BasicRest1TearDown)
+]);
+
+// ----------------------------------------------------------------------------
+
+var result;
+
+function basic_rest_fn_1(factor, ...values) {
+  var result = 0;
+  for (var i = 0; i < values.length; ++i) {
+    result += (factor * values[i]);
+  }
+  return result;
+}
+
+function BasicRest1Setup() {}
+
+function BasicRest1() {
+  result = basic_rest_fn_1(10, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10);
+}
+
+function BasicRest1TearDown() {
+  return result == 550;
+}