Move EnsureFastWritableElements into the elements accessor.

Move EnsureFastWritableElements into the elements accessor.

Additionally clean up the elements accessor api a bit.

BUG=

Committed: https://crrev.com/cf43d2a788276bfb25618c30653ba3900b53a9fd
Cr-Commit-Position: refs/heads/master@{#34549}

[Toon Verwaest, 2016-03-07 10:26:51]

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

[Toon Verwaest, 2016-03-07 10:26:52]

ptal

[Camillo Bruni, 2016-03-07 11:47:30]

lgtm

[Toon Verwaest, 2016-03-07 12:04:13]

The CQ bit was checked by verwaest@chromium.org

[commit-bot: I haz the power, 2016-03-07 12:04:26]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1770793002/140001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1770793002/140001

[Toon Verwaest, 2016-03-07 12:09:33]

The CQ bit was checked by verwaest@chromium.org

[Toon Verwaest, 2016-03-07 12:09:33]

The patchset sent to the CQ was uploaded after l-g-t-m from cbruni@chromium.org
Link to the patchset: https://codereview.chromium.org/1770793002/#ps160001
(title: " ")

[commit-bot: I haz the power, 2016-03-07 12:09:43]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1770793002/160001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1770793002/160001

[commit-bot: I haz the power, 2016-03-07 12:58:49]

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

[commit-bot: I haz the power, 2016-03-07 12:58:50]

Try jobs failed on following builders:
  v8_linux_dbg_ng on tryserver.v8 (JOB_FAILED,
http://build.chromium.org/p/tryserver.v8/builders/v8_linux_dbg_ng/builds/2447)
  v8_linux_dbg_ng_triggered on tryserver.v8 (JOB_FAILED,
http://build.chromium.org/p/tryserver.v8/builders/v8_linux_dbg_ng_triggered/b...)

[Toon Verwaest, 2016-03-07 13:34:29]

The CQ bit was checked by verwaest@chromium.org

[Toon Verwaest, 2016-03-07 13:34:30]

The patchset sent to the CQ was uploaded after l-g-t-m from cbruni@chromium.org
Link to the patchset: https://codereview.chromium.org/1770793002/#ps180001
(title: " ")

[commit-bot: I haz the power, 2016-03-07 13:34:37]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1770793002/180001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1770793002/180001

[commit-bot: I haz the power, 2016-03-07 14:04:18]

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

[commit-bot: I haz the power, 2016-03-07 14:04:19]

Try jobs failed on following builders:
  v8_linux_dbg_ng on tryserver.v8 (JOB_FAILED,
http://build.chromium.org/p/tryserver.v8/builders/v8_linux_dbg_ng/builds/2454)
  v8_linux_dbg_ng_triggered on tryserver.v8 (JOB_FAILED,
http://build.chromium.org/p/tryserver.v8/builders/v8_linux_dbg_ng_triggered/b...)

[Toon Verwaest, 2016-03-07 15:18:07]

The CQ bit was checked by verwaest@chromium.org

[Toon Verwaest, 2016-03-07 15:18:08]

The patchset sent to the CQ was uploaded after l-g-t-m from cbruni@chromium.org
Link to the patchset: https://codereview.chromium.org/1770793002/#ps200001
(title: " ")

[commit-bot: I haz the power, 2016-03-07 15:18:18]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1770793002/200001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1770793002/200001

[commit-bot: I haz the power, 2016-03-07 15:28:53]

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

[commit-bot: I haz the power, 2016-03-07 15:28:54]

Try jobs failed on following builders:
  v8_linux_nodcheck_rel on tryserver.v8 (JOB_FAILED,
http://build.chromium.org/p/tryserver.v8/builders/v8_linux_nodcheck_rel/build...)

[Toon Verwaest, 2016-03-07 16:14:41]

The CQ bit was checked by verwaest@chromium.org

[commit-bot: I haz the power, 2016-03-07 16:14:44]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1770793002/200001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1770793002/200001

[commit-bot: I haz the power, 2016-03-07 16:25:05]

Committed patchset #11 (id:200001)

[commit-bot: I haz the power, 2016-03-07 16:26:31]

Description was changed from

==========
Move EnsureFastWritableElements into the elements accessor.

Additionally clean up the elements accessor api a bit.

BUG=
==========

to

==========
Move EnsureFastWritableElements into the elements accessor.

Additionally clean up the elements accessor api a bit.

BUG=

Committed: https://crrev.com/cf43d2a788276bfb25618c30653ba3900b53a9fd
Cr-Commit-Position: refs/heads/master@{#34549}
==========

[commit-bot: I haz the power, 2016-03-07 16:26:33]

Patchset 11 (id:??) landed as
https://crrev.com/cf43d2a788276bfb25618c30653ba3900b53a9fd
Cr-Commit-Position: refs/heads/master@{#34549}