Revert of Update V8 to version 4.3.16.

Revert of Update V8 to version 4.3.16. (patchset #1 id:1 of https://codereview.chromium.org/974813002/)

Reason for revert:
Speculative revert for issue 463436.

Original issue's description:
> Update V8 to version 4.3.16.
>
> Summary of changes available at:
> https://chromium.googlesource.com/v8/v8/+log/155278d6..ea02c333
>
> Please follow these instructions for assigning/CC'ing issues:
> https://code.google.com/p/v8-wiki/wiki/TriagingIssues
>
> TBR=machenbach@chromium.org
> NOTRY=true
>
> Committed: https://crrev.com/5d61006f40e3f14bbf8f2c60f698b051f8f84fd9
> Cr-Commit-Position: refs/heads/master@{#318874}

TBR=v8-autoroll@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true

Committed: https://crrev.com/cb33633cc8920c3dc61b217285e4887f03d75613
Cr-Commit-Position: refs/heads/master@{#318879}

[Michael Achenbach, 2015-03-03 15:53:26]

Created Revert of Update V8 to version 4.3.16.

[commit-bot: I haz the power, 2015-03-03 15:55:15]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/978433002/1

[commit-bot: I haz the power, 2015-03-03 15:56:36]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-03-03 15:57:10]

Patchset 1 (id:??) landed as
https://crrev.com/cb33633cc8920c3dc61b217285e4887f03d75613
Cr-Commit-Position: refs/heads/master@{#318879}

[Michael Achenbach, 2015-03-04 07:51:19]

A revert of this CL (patchset #1 id:1) has been created in
https://codereview.chromium.org/976713005/ by machenbach@chromium.org.

The reason for reverting is: The roll wasn't the cause for issue 463436.
Therefore relanding..