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}
Implements Stage 4 proposal from http://rwaldron.github.io/exponentiation-operator/, without adding any knowledge of the feature to compiler backends. BUG=v8:3915 LOG=Y R=adamk@chromium.org, rossberg@chromium.org, littledan@chromium.org Review URL: https://codereview.chromium.org/1678303002 Cr-Commit-Position: refs/heads/master@{#34890}