Update V8 to version 3.31.29 (based on a2b5c7abae7b8db9ae48504c86746a6d5aa20d87).

Update V8 to version 3.31.29 (based on a2b5c7abae7b8db9ae48504c86746a6d5aa20d87).

TBR=machenbach@chromium.org

Committed: https://crrev.com/ac4534379e11ddffe11e48aa736d80ac3f6e964f
Cr-Commit-Position: refs/heads/master@{#306119}

[v8-autoroll, 2014-11-28 20:03:38]

The CQ bit was checked by v8-autoroll@chromium.org

[commit-bot: I haz the power, 2014-11-28 20:04:20]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/770503002/1

[commit-bot: I haz the power, 2014-11-28 20:04:21]

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

[commit-bot: I haz the power, 2014-11-28 20:04:22]

No LGTM from a valid reviewer yet. Only full committers are accepted.
Even if an LGTM may have been provided, it was from a non-committer,
_not_ a full super star committer.
See http://www.chromium.org/getting-involved/become-a-committer
Note that this has nothing to do with OWNERS files.

[Michael Achenbach, 2014-11-28 20:58:34]

lgtm

[Michael Achenbach, 2014-11-28 20:58:38]

The CQ bit was checked by machenbach@chromium.org

[commit-bot: I haz the power, 2014-11-28 20:59:42]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/770503002/1

[commit-bot: I haz the power, 2014-11-29 14:38:37]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2014-11-29 14:40:43]

Patchset 1 (id:??) landed as
https://crrev.com/ac4534379e11ddffe11e48aa736d80ac3f6e964f
Cr-Commit-Position: refs/heads/master@{#306119}

[Ken Russell (switch to Gerrit), 2014-11-29 22:22:18]

A revert of this CL (patchset #1 id:1) has been created in
https://codereview.chromium.org/757193003/ by kbr@chromium.org.

The reason for reverting is: Caused assertion failures; see
https://code.google.com/p/v8/issues/detail?id=3728 .
.