Add array pattern destructuring micro-benchmarks. These benchmarks compare
a naive ES5 immplementation to an ES6-style implementation that uses
destructuring.

Adapted from http://kpdecker.github.io/six-speed

BUG=v8:5267

Review-Url: https://codereview.chromium.org/2513273002
Cr-Commit-Position: refs/heads/master@{#41126}