X87: [es6] Re-implement rest parameters via desugaring.

X87: [es6] Re-implement rest parameters via desugaring.

port 510baeacbab311798d5e8795800ff773d00d062c (r30550)

original commit message:

    Kills the kRestParameter bailout/disabled optimization, and fixes
    lazily parsed arrow functions with rest parameters.

    Supercedes https://crrev.com/1235153006/

BUG=

Committed: https://crrev.com/e5ee42fa05fdc30b75cd575366cbba292e94f022
Cr-Commit-Position: refs/heads/master@{#30608}

[chunyang.dai, 2015-09-06 10:20:15]

chunyang.dai@intel.com changed reviewers:
+ weiliang.lin@intel.com

[chunyang.dai, 2015-09-06 10:20:15]

PTAL

[Weiliang, 2015-09-07 07:17:30]

The CQ bit was checked by weiliang.lin@intel.com

[Weiliang, 2015-09-07 07:17:30]

lgtm

[commit-bot: I haz the power, 2015-09-07 07:17:42]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1305943008/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1305943008/1

[commit-bot: I haz the power, 2015-09-07 07:51:31]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-09-07 07:51:45]

Patchset 1 (id:??) landed as
https://crrev.com/e5ee42fa05fdc30b75cd575366cbba292e94f022
Cr-Commit-Position: refs/heads/master@{#30608}