Revert of Provide a tagged allocation top pointer.

Revert of Provide a tagged allocation top pointer. (patchset #4 id:60001 of https://codereview.chromium.org/2028633002/ )

Reason for revert:
Seems to be causing flakiness in some wasm tests:

https://build.chromium.org/p/client.v8/builders/V8%20Linux/builds/10598
https://build.chromium.org/p/client.v8/builders/V8%20Win32%20-%20debug/builds/2528

Original issue's description:
> Provide a tagged allocation top pointer.
>
> Taking over http://crrev.com/1924223002.
>
> BUG=chromium:606711
> LOG=N
>
> Committed: https://crrev.com/f42c9e93c80fdf57e8f92bb87f6ed927d0ae4028
> Cr-Commit-Position: refs/heads/master@{#36633}

TBR=bmeurer@chromium.org,hpayer@chromium.org,machenbach@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=chromium:606711
Committed: https://crrev.com/79f45e026b77f51060cc3498268ffd48a482af04
Cr-Commit-Position: refs/heads/master@{#36640}

[epertoso, 2016-06-01 11:01:56]

The CQ bit was checked by epertoso@chromium.org

[epertoso, 2016-06-01 11:01:57]

Created Revert of Provide a tagged allocation top pointer.

[commit-bot: I haz the power, 2016-06-01 11:01:59]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/2031493002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/2031493002/1

[commit-bot: I haz the power, 2016-06-01 11:02:14]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-06-01 11:04:23]

Description was changed from

==========
Revert of Provide a tagged allocation top pointer. (patchset #4 id:60001 of
https://codereview.chromium.org/2028633002/ )

Reason for revert:
Seems to be causing flakiness in some wasm tests: 

https://build.chromium.org/p/client.v8/builders/V8%20Linux/builds/10598
https://build.chromium.org/p/client.v8/builders/V8%20Win32%20-%20debug/builds...


Original issue's description:
> Provide a tagged allocation top pointer.
> 
> Taking over http://crrev.com/1924223002.
> 
> BUG=chromium:606711
> LOG=N
> 
> Committed: https://crrev.com/f42c9e93c80fdf57e8f92bb87f6ed927d0ae4028
> Cr-Commit-Position: refs/heads/master@{#36633}

TBR=bmeurer@chromium.org,hpayer@chromium.org,machenbach@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=chromium:606711
==========

to

==========
Revert of Provide a tagged allocation top pointer. (patchset #4 id:60001 of
https://codereview.chromium.org/2028633002/ )

Reason for revert:
Seems to be causing flakiness in some wasm tests:

https://build.chromium.org/p/client.v8/builders/V8%20Linux/builds/10598
https://build.chromium.org/p/client.v8/builders/V8%20Win32%20-%20debug/builds...

Original issue's description:
> Provide a tagged allocation top pointer.
>
> Taking over http://crrev.com/1924223002.
>
> BUG=chromium:606711
> LOG=N
>
> Committed: https://crrev.com/f42c9e93c80fdf57e8f92bb87f6ed927d0ae4028
> Cr-Commit-Position: refs/heads/master@{#36633}

TBR=bmeurer@chromium.org,hpayer@chromium.org,machenbach@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=chromium:606711

Committed: https://crrev.com/79f45e026b77f51060cc3498268ffd48a482af04
Cr-Commit-Position: refs/heads/master@{#36640}
==========

[commit-bot: I haz the power, 2016-06-01 11:04:24]

Patchset 1 (id:??) landed as
https://crrev.com/79f45e026b77f51060cc3498268ffd48a482af04
Cr-Commit-Position: refs/heads/master@{#36640}