Revert "Revert of [test262-es6] Update to 2011-06-29 (patchset #1 id:1 of https://codereview.chromium.org/1220793005/)"

This reverts commit f50fff57.

BUG=N
LOG=N
R=littledan@chromium.org, machenbach@chromium.org

Review URL: https://codereview.chromium.org/1212723004

Cr-Commit-Position: refs/heads/master@{#29517}