[builtins] make AsyncFunction constructor a subclass of Function

[builtins] make AsyncFunction constructor a subclass of Function

Corrects a small problem with the current implementation of the AsyncFunction
constructor.

See https://tc39.github.io/ecmascript-asyncawait/#async-function-constructor for
details.

BUG=v8:4483
R=littledan@chromium.org, adamk@chromium.org, jwolfe@igalia.com

Committed: https://crrev.com/cd9e5f30ea58e8e92ed2b2ee7c608b905b91d725
Cr-Commit-Position: refs/heads/master@{#37484}

[caitp (gmail), 2016-07-01 21:44:14]

PTAL --- small spec compliance issue that needs to be addressed before the
feature is shipped.

[Dan Ehrenberg, 2016-07-01 22:08:09]

On 2016/07/01 21:44:14, caitp wrote:
> PTAL --- small spec compliance issue that needs to be addressed before the
> feature is shipped.

lgtm

[caitp (gmail), 2016-07-01 22:34:30]

The CQ bit was checked by caitpotter88@gmail.com

[commit-bot: I haz the power, 2016-07-01 22:34:31]

CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[commit-bot: I haz the power, 2016-07-01 22:50:13]

Committed patchset #3 (id:40001)

[commit-bot: I haz the power, 2016-07-01 22:52:51]

Description was changed from

==========
[builtins] make AsyncFunction constructor a subclass of Function

Corrects a small problem with the current implementation of the AsyncFunction
constructor.

See https://tc39.github.io/ecmascript-asyncawait/#async-function-constructor for
details.

BUG=v8:4483
R=littledan@chromium.org, adamk@chromium.org, jwolfe@igalia.com
==========

to

==========
[builtins] make AsyncFunction constructor a subclass of Function

Corrects a small problem with the current implementation of the AsyncFunction
constructor.

See https://tc39.github.io/ecmascript-asyncawait/#async-function-constructor for
details.

BUG=v8:4483
R=littledan@chromium.org, adamk@chromium.org, jwolfe@igalia.com

Committed: https://crrev.com/cd9e5f30ea58e8e92ed2b2ee7c608b905b91d725
Cr-Commit-Position: refs/heads/master@{#37484}
==========

[commit-bot: I haz the power, 2016-07-01 22:52:52]

Patchset 3 (id:??) landed as
https://crrev.com/cd9e5f30ea58e8e92ed2b2ee7c608b905b91d725
Cr-Commit-Position: refs/heads/master@{#37484}