Revert of Update V8 to version 5.1.127.

Revert of Update V8 to version 5.1.127. (patchset #1 id:1 of https://codereview.chromium.org/1799403002/ )

Reason for revert:
This appears to make several tests flaky.  See crbug.com/595092

Original issue's description:
> Update V8 to version 5.1.127.
>
> Summary of changes available at:
> https://chromium.googlesource.com/v8/v8/+log/2b8fdcf7..da7cc15c
>
> Please follow these instructions for assigning/CC'ing issues:
> https://github.com/v8/v8/wiki/Triaging%20issues
>
> Please close rolling in case of a roll revert:
> https://v8-roll.appspot.com/
> This only works with a Google account.
>
> TBR=hablich@chromium.org,machenbach@chromium.org,yangguo@chromium.org,vogelheim@chromium.org
>
> Committed: https://crrev.com/79277ce2a7897fcc7cb78acd7383e28c7c2129e0
> Cr-Commit-Position: refs/heads/master@{#381190}

TBR=hablich@chromium.org,machenbach@chromium.org,vogelheim@chromium.org,yangguo@chromium.org,v8-autoroll@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true

Committed: https://crrev.com/a585630b19d3932b181559465d05b908ea9bc116
Cr-Commit-Position: refs/heads/master@{#381343}

[dewittj, 2016-03-15 22:56:33]

Created Revert of Update V8 to version 5.1.127.

[dewittj, 2016-03-15 23:02:41]

The CQ bit was checked by dewittj@chromium.org

[commit-bot: I haz the power, 2016-03-15 23:03:19]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1808543002/40001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1808543002/40001

[commit-bot: I haz the power, 2016-03-15 23:04:00]

Committed patchset #2 (id:40001)

[commit-bot: I haz the power, 2016-03-15 23:07:17]

Description was changed from

==========
Revert of Update V8 to version 5.1.127. (patchset #1 id:1 of
https://codereview.chromium.org/1799403002/ )

Reason for revert:
This appears to make several tests flaky.  See crbug.com/595092

Original issue's description:
> Update V8 to version 5.1.127.
> 
> Summary of changes available at:
> https://chromium.googlesource.com/v8/v8/+log/2b8fdcf7..da7cc15c
> 
> Please follow these instructions for assigning/CC'ing issues:
> https://github.com/v8/v8/wiki/Triaging%20issues
> 
> Please close rolling in case of a roll revert:
> https://v8-roll.appspot.com/
> This only works with a Google account.
> 
>
TBR=hablich@chromium.org,machenbach@chromium.org,yangguo@chromium.org,vogelhe...
> 
> Committed: https://crrev.com/79277ce2a7897fcc7cb78acd7383e28c7c2129e0
> Cr-Commit-Position: refs/heads/master@{#381190}

TBR=hablich@chromium.org,machenbach@chromium.org,vogelheim@chromium.org,yangg...
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
==========

to

==========
Revert of Update V8 to version 5.1.127. (patchset #1 id:1 of
https://codereview.chromium.org/1799403002/ )

Reason for revert:
This appears to make several tests flaky.  See crbug.com/595092

Original issue's description:
> Update V8 to version 5.1.127.
>
> Summary of changes available at:
> https://chromium.googlesource.com/v8/v8/+log/2b8fdcf7..da7cc15c
>
> Please follow these instructions for assigning/CC'ing issues:
> https://github.com/v8/v8/wiki/Triaging%20issues
>
> Please close rolling in case of a roll revert:
> https://v8-roll.appspot.com/
> This only works with a Google account.
>
>
TBR=hablich@chromium.org,machenbach@chromium.org,yangguo@chromium.org,vogelhe...
>
> Committed: https://crrev.com/79277ce2a7897fcc7cb78acd7383e28c7c2129e0
> Cr-Commit-Position: refs/heads/master@{#381190}

TBR=hablich@chromium.org,machenbach@chromium.org,vogelheim@chromium.org,yangg...
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true

Committed: https://crrev.com/a585630b19d3932b181559465d05b908ea9bc116
Cr-Commit-Position: refs/heads/master@{#381343}
==========

[commit-bot: I haz the power, 2016-03-15 23:07:18]

Patchset 2 (id:??) landed as
https://crrev.com/a585630b19d3932b181559465d05b908ea9bc116
Cr-Commit-Position: refs/heads/master@{#381343}

[adamk, 2016-03-15 23:14:01]

adamk@chromium.org changed reviewers:
+ adamk@chromium.org

[adamk, 2016-03-15 23:14:02]

In particular, turning on black allocation
(https://codereview.chromium.org/1800733002) is the suspect here.