[Test] Do a set number of runs to trigger optimisation for SuperSpread.

test/js-perf-test/SixSpeed/super_spread/super_spread.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('SuperSpread-ES5', [1000], [
-  new Benchmark('ES5', false, false, 0, ES5),
+  new Benchmark('ES5', true, true, 150000, ES5),
 ]);
 
 new BenchmarkSuite('SuperSpread-Babel', [1000], [
-  new Benchmark('Babel', false, false, 0, Babel),
+  new Benchmark('Babel', true, true, 150000, Babel),
 ]);
 
 new BenchmarkSuite('SuperSpread-ES6', [1000], [
-  new Benchmark('ES6', false, false, 0, ES6),
+  new Benchmark('ES6', true, true, 150000, ES6),
 ]);
 
 // ----------------------------------------------------------------------------
 // Benchmark: ES5
 // ----------------------------------------------------------------------------
 
 function ES5() {
   'use strict';
 
   function Point(x, y) {
@@ skipping 96 matching lines @@
   }
 
   class MyPoint extends Point {}
 
   function makePoint(x, y) {
     return new MyPoint(x, y);
   }
 
   return makePoint(1, 2);
 }