Use stricter type checks in Intl's bound methods

Use stricter type checks in Intl's bound methods

This patch ensures that Intl bound method getters can't be retargeted
to other Intl types. If that were to happen, then a RUNTIME_ASSERT
would trigger later. This patch throws a TypeError instead, as the
specification requires.

BUG=v8:4870
Committed: https://crrev.com/29bd8286ee98d7ac8524d98e10892f108e814c7b
Cr-Commit-Position: refs/heads/master@{#36330}

[Dan Ehrenberg, 2016-05-17 21:24:00]

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

[commit-bot: I haz the power, 2016-05-17 21:24:10]

Dry run: CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1986763003/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1986763003/1

[Dan Ehrenberg, 2016-05-17 21:24:50]

littledan@chromium.org changed reviewers:
+ yangguo@chromium.org

[commit-bot: I haz the power, 2016-05-17 21:52:49]

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

[commit-bot: I haz the power, 2016-05-17 21:52:50]

Dry run: This issue passed the CQ dry run.

[Yang, 2016-05-18 12:21:31]

On 2016/05/17 21:52:50, commit-bot: I haz the power wrote:
> Dry run: This issue passed the CQ dry run.

lgtm.

[Dan Ehrenberg, 2016-05-18 14:50:08]

The CQ bit was checked by littledan@chromium.org

[commit-bot: I haz the power, 2016-05-18 14:50:19]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1986763003/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1986763003/1

[commit-bot: I haz the power, 2016-05-18 14:55:42]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-05-18 14:58:05]

Description was changed from

==========
Use stricter type checks in Intl's bound methods

This patch ensures that Intl bound method getters can't be retargeted
to other Intl types. If that were to happen, then a RUNTIME_ASSERT
would trigger later. This patch throws a TypeError instead, as the
specification requires.

BUG=v8:4870
==========

to

==========
Use stricter type checks in Intl's bound methods

This patch ensures that Intl bound method getters can't be retargeted
to other Intl types. If that were to happen, then a RUNTIME_ASSERT
would trigger later. This patch throws a TypeError instead, as the
specification requires.

BUG=v8:4870

Committed: https://crrev.com/29bd8286ee98d7ac8524d98e10892f108e814c7b
Cr-Commit-Position: refs/heads/master@{#36330}
==========

[commit-bot: I haz the power, 2016-05-18 14:58:07]

Patchset 1 (id:??) landed as
https://crrev.com/29bd8286ee98d7ac8524d98e10892f108e814c7b
Cr-Commit-Position: refs/heads/master@{#36330}