R=mstarzinger@chromium.org BUG=v8:4690 LOG=N Review URL: https://codereview.chromium.org/1903223003 Cr-Commit-Position: refs/heads/master@{#35729}
Both of them shipped in Chrome 49 without incident. Also move relevant tests from harmony/ to es6/. Review URL: https://codereview.chromium.org/1815773002 Cr-Commit-Position: refs/heads/master@{#34964}