It shipped in Chrome 47. Review URL: https://codereview.chromium.org/1519073004 Cr-Commit-Position: refs/heads/master@{#32816}
Arrow functions have been enabled by default since the 4.5 branch. Review URL: https://codereview.chromium.org/1373633002 Cr-Commit-Position: refs/heads/master@{#31031}
R=rossberg@chromium.org BUG=v8:4194 LOG=N Review URL: https://codereview.chromium.org/1191303002 Cr-Commit-Position: refs/heads/master@{#29153}