[tests] Add js-perf-test for %TypedArray%.prototype.sort

test/js-perf-test/TypedArrays/typedarrays.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.
-
-new BenchmarkSuite('CopyWithin', [1000], [
-  new Benchmark('CopyWithin-Large', false, false, 0,
-                CopyWithinLarge, CopyWithinLargeSetup, CopyWithinLargeTearDown),
-]);
-
-var initialLargeFloat64Array = new Array(10000);
-for (var i = 0; i < 5000; ++i) {
-  initialLargeFloat64Array[i] = i;
-}
-initialLargeFloat64Array = new Float64Array(initialLargeFloat64Array);
-var largeFloat64Array;
-
-function CopyWithinLarge() {
-  largeFloat64Array.copyWithin(5000);
-}
-
-function CopyWithinLargeSetup() {
-  largeFloat64Array = new Float64Array(initialLargeFloat64Array);
-}
-
-function CopyWithinLargeTearDown() {
-  for (var i = 0; i < 5000; ++i) {
-    if (largeFloat64Array[i + 5000] !== i) {
-      throw new TypeError("Unexpected result!\n" + largeFloat64Array);
-    }
-  }
-  largeFloat64Array = void 0;
-}