BUG=v8:6325

Change-Id: I5a638c47b33d6e75d31f020c499ffd084348fea4
Reviewed-on: https://chromium-review.googlesource.com/489505
Commit-Queue: Wiktor Garbacz <wiktorg@google.com>
Reviewed-by: Marja Hölttä <marja@chromium.org>
Reviewed-by: Andreas Haas <ahaas@chromium.org>
Reviewed-by: Daniel Clifford <danno@chromium.org>
Cr-Commit-Position: refs/heads/master@{#45010}

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=dslomov@chromium.org, rossberg@chromium.org
LOG=Y
BUG=v8:2700

Review URL: https://codereview.chromium.org/1178523002

Cr-Commit-Position: refs/heads/master@{#28908}

LOG=Y
BUG=v8:2159
R=dslomov@chromium.org, arv@chromium.org, marja@chromium.org

Review URL: https://codereview.chromium.org/816913003

Cr-Commit-Position: refs/heads/master@{#26645}