[runtime] Allow generic allocation of sloppy arguments.

[runtime] Allow generic allocation of sloppy arguments.

This allows sloppy arguments objects to be allocated by the generic
Heap::AllocateJSObjectFromMap allocation function. An empty elements
backing store for such objects is provided. This is needed in order to
materialize such objects without access to a specific native context.

R=bmeurer@chromium.org
TEST=mjsunit/regress/regress-crbug-613919
BUG=chromium:613919
Committed: https://crrev.com/addfd00a20f4b9ddabf7e71d51aa524431ec0090
Cr-Commit-Position: refs/heads/master@{#36547}

[Benedikt Meurer, 2016-05-27 12:12:34]

Nice. LGTM.

[Michael Starzinger, 2016-05-27 12:18:26]

The CQ bit was checked by mstarzinger@chromium.org

[commit-bot: I haz the power, 2016-05-27 12:18:37]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/2014343004/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/2014343004/1

[commit-bot: I haz the power, 2016-05-27 12:37:29]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-05-27 12:39:02]

Description was changed from

==========
[runtime] Allow generic allocation of sloppy arguments.

This allows sloppy arguments objects to be allocated by the generic
Heap::AllocateJSObjectFromMap allocation function. An empty elements
backing store for such objects is provided. This is needed in order to
materialize such objects without access to a specific native context.

R=bmeurer@chromium.org
TEST=mjsunit/regress/regress-crbug-613919
BUG=chromium:613919
==========

to

==========
[runtime] Allow generic allocation of sloppy arguments.

This allows sloppy arguments objects to be allocated by the generic
Heap::AllocateJSObjectFromMap allocation function. An empty elements
backing store for such objects is provided. This is needed in order to
materialize such objects without access to a specific native context.

R=bmeurer@chromium.org
TEST=mjsunit/regress/regress-crbug-613919
BUG=chromium:613919

Committed: https://crrev.com/addfd00a20f4b9ddabf7e71d51aa524431ec0090
Cr-Commit-Position: refs/heads/master@{#36547}
==========

[commit-bot: I haz the power, 2016-05-27 12:39:03]

Patchset 1 (id:??) landed as
https://crrev.com/addfd00a20f4b9ddabf7e71d51aa524431ec0090
Cr-Commit-Position: refs/heads/master@{#36547}