[runtime] Stop cloning AccessorInfo, just rely on PropertyAttributes for readonly.

[runtime] Stop cloning AccessorInfo, just rely on PropertyAttributes for readonly.

The old mechanism was a left-over from a previous time where the runtime
would rely on the presence or absence of the setter to figure out
whether or not the property is mutable. This is unnecessary by now.

Committed: https://crrev.com/90952d768b8d64a0d8b3ee60365c2ef16c57ec5d
Cr-Commit-Position: refs/heads/master@{#33377}

[Toon Verwaest, 2016-01-18 17:54:39]

verwaest@chromium.org changed reviewers:
+ ishell@chromium.org

[Toon Verwaest, 2016-01-18 17:54:39]

ptal

[Igor Sheludko, 2016-01-18 18:11:53]

lgtm

[Toon Verwaest, 2016-01-18 19:24:43]

The CQ bit was checked by verwaest@chromium.org

[commit-bot: I haz the power, 2016-01-18 19:24:46]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1600923002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1600923002/1

[commit-bot: I haz the power, 2016-01-18 19:59:33]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-01-18 20:00:10]

Description was changed from

==========
[runtime] Stop cloning AccessorInfo, just rely on PropertyAttributes for
readonly.

The old mechanism was a left-over from a previous time where the runtime
would rely on the presence or absence of the setter to figure out
whether or not the property is mutable. This is unnecessary by now.
==========

to

==========
[runtime] Stop cloning AccessorInfo, just rely on PropertyAttributes for
readonly.

The old mechanism was a left-over from a previous time where the runtime
would rely on the presence or absence of the setter to figure out
whether or not the property is mutable. This is unnecessary by now.

Committed: https://crrev.com/90952d768b8d64a0d8b3ee60365c2ef16c57ec5d
Cr-Commit-Position: refs/heads/master@{#33377}
==========

[commit-bot: I haz the power, 2016-01-18 20:00:11]

Patchset 1 (id:??) landed as
https://crrev.com/90952d768b8d64a0d8b3ee60365c2ef16c57ec5d
Cr-Commit-Position: refs/heads/master@{#33377}