Remove ToObject on elements from Array.prototype.toLocaleString()

Remove ToObject on elements from Array.prototype.toLocaleString()

In ES5, ToObject was called on elements before invoking the
.toLocaleString() method on them. ES2015 specifies that ToObject is
not called. A test262 test verifies this change. This patch
implements the new ES2015 behavior. It is verified by the test262 test
built-ins/Array/prototype/toLocaleString/primitive_this_value_getter

R=adamk

Committed: https://crrev.com/80aa6a5f7f9d49365657bf64a78bf0f5e5918b99
Cr-Commit-Position: refs/heads/master@{#31160}

[Dan Ehrenberg, 2015-10-07 01:26:20]

The CQ bit was checked by littledan@chromium.org to run a CQ dry run

[commit-bot: I haz the power, 2015-10-07 01:26:35]

Dry run: CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1390893003/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1390893003/1

[commit-bot: I haz the power, 2015-10-07 01:51:51]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2015-10-07 01:51:51]

Dry run: This issue passed the CQ dry run.

[adamk, 2015-10-07 18:16:33]

The CQ bit was checked by adamk@chromium.org

[adamk, 2015-10-07 18:16:33]

lgtm

[commit-bot: I haz the power, 2015-10-07 18:17:17]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1390893003/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1390893003/1

[commit-bot: I haz the power, 2015-10-07 18:19:01]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-10-07 18:19:48]

Patchset 1 (id:??) landed as
https://crrev.com/80aa6a5f7f9d49365657bf64a78bf0f5e5918b99
Cr-Commit-Position: refs/heads/master@{#31160}