Revert of [heap] Track length for array buffers to avoid free-ing dependency

Revert of [heap] Track length for array buffers to avoid free-ing dependency (patchset #2 id:20001 of https://codereview.chromium.org/2122603004/ )

Reason for revert:
[Sheriff] This makes mjsunit/regress/regress-625752 extremely slow on all gc stress bots and leads to timeouts with custom snapshot:
https://build.chromium.org/p/client.v8/builders/V8%20Linux64%20GC%20Stress%20-%20custom%20snapshot/builds/6602

Original issue's description:
> [heap] Track length for array buffers to avoid free-ing dependency
>
> The dependency would only happen if we have a smi overflow for the length and
> have create a heap number. In this case the heap number would've to survive
> until the array buffer is collected.
>
> To avoid this dependency we track the length (as we previously used to).
>
> BUG=chromium:625748, chromium:625752
> LOG=N
> TEST=test/mjsunit/regress/regress-625752.js
> R=hpayer@chromium.org
>
> Committed: https://crrev.com/ddc75cc1356a58b6cfd63f9da0586e1150496b3d
> Cr-Commit-Position: refs/heads/master@{#37530}

TBR=hpayer@chromium.org,mlippautz@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=chromium:625748, chromium:625752
Committed: https://crrev.com/1791d7bb9ad26d8096bc5e2ed2216ea8b8dcc3cd
Cr-Commit-Position: refs/heads/master@{#37533}

[Michael Achenbach, 2016-07-05 14:40:46]

The CQ bit was checked by machenbach@chromium.org

[Michael Achenbach, 2016-07-05 14:40:46]

Created Revert of [heap] Track length for array buffers to avoid free-ing
dependency

[commit-bot: I haz the power, 2016-07-05 14:40:53]

CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[commit-bot: I haz the power, 2016-07-05 14:41:05]

Description was changed from

==========
Revert of [heap] Track length for array buffers to avoid free-ing dependency
(patchset #2 id:20001 of https://codereview.chromium.org/2122603004/ )

Reason for revert:
[Sheriff] This makes mjsunit/regress/regress-625752 extremely slow on all gc
stress bots and leads to timeouts with custom snapshot:
https://build.chromium.org/p/client.v8/builders/V8%20Linux64%20GC%20Stress%20...

Original issue's description:
> [heap] Track length for array buffers to avoid free-ing dependency
> 
> The dependency would only happen if we have a smi overflow for the length and
> have create a heap number. In this case the heap number would've to survive
> until the array buffer is collected.
> 
> To avoid this dependency we track the length (as we previously used to).
> 
> BUG=chromium:625748,chromium:625752
> LOG=N
> TEST=test/mjsunit/regress/regress-625752.js
> R=hpayer@chromium.org
> 
> Committed: https://crrev.com/ddc75cc1356a58b6cfd63f9da0586e1150496b3d
> Cr-Commit-Position: refs/heads/master@{#37530}

TBR=hpayer@chromium.org,mlippautz@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=chromium:625748,chromium:625752
==========

to

==========
Revert of [heap] Track length for array buffers to avoid free-ing dependency
(patchset #2 id:20001 of https://codereview.chromium.org/2122603004/ )

Reason for revert:
[Sheriff] This makes mjsunit/regress/regress-625752 extremely slow on all gc
stress bots and leads to timeouts with custom snapshot:
https://build.chromium.org/p/client.v8/builders/V8%20Linux64%20GC%20Stress%20...

Original issue's description:
> [heap] Track length for array buffers to avoid free-ing dependency
> 
> The dependency would only happen if we have a smi overflow for the length and
> have create a heap number. In this case the heap number would've to survive
> until the array buffer is collected.
> 
> To avoid this dependency we track the length (as we previously used to).
> 
> BUG=chromium:625748,chromium:625752
> LOG=N
> TEST=test/mjsunit/regress/regress-625752.js
> R=hpayer@chromium.org
> 
> Committed: https://crrev.com/ddc75cc1356a58b6cfd63f9da0586e1150496b3d
> Cr-Commit-Position: refs/heads/master@{#37530}

TBR=hpayer@chromium.org,mlippautz@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=chromium:625748,chromium:625752
==========

[commit-bot: I haz the power, 2016-07-05 14:41:06]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-07-05 14:43:33]

Description was changed from

==========
Revert of [heap] Track length for array buffers to avoid free-ing dependency
(patchset #2 id:20001 of https://codereview.chromium.org/2122603004/ )

Reason for revert:
[Sheriff] This makes mjsunit/regress/regress-625752 extremely slow on all gc
stress bots and leads to timeouts with custom snapshot:
https://build.chromium.org/p/client.v8/builders/V8%20Linux64%20GC%20Stress%20...

Original issue's description:
> [heap] Track length for array buffers to avoid free-ing dependency
> 
> The dependency would only happen if we have a smi overflow for the length and
> have create a heap number. In this case the heap number would've to survive
> until the array buffer is collected.
> 
> To avoid this dependency we track the length (as we previously used to).
> 
> BUG=chromium:625748,chromium:625752
> LOG=N
> TEST=test/mjsunit/regress/regress-625752.js
> R=hpayer@chromium.org
> 
> Committed: https://crrev.com/ddc75cc1356a58b6cfd63f9da0586e1150496b3d
> Cr-Commit-Position: refs/heads/master@{#37530}

TBR=hpayer@chromium.org,mlippautz@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=chromium:625748,chromium:625752
==========

to

==========
Revert of [heap] Track length for array buffers to avoid free-ing dependency
(patchset #2 id:20001 of https://codereview.chromium.org/2122603004/ )

Reason for revert:
[Sheriff] This makes mjsunit/regress/regress-625752 extremely slow on all gc
stress bots and leads to timeouts with custom snapshot:
https://build.chromium.org/p/client.v8/builders/V8%20Linux64%20GC%20Stress%20...

Original issue's description:
> [heap] Track length for array buffers to avoid free-ing dependency
>
> The dependency would only happen if we have a smi overflow for the length and
> have create a heap number. In this case the heap number would've to survive
> until the array buffer is collected.
>
> To avoid this dependency we track the length (as we previously used to).
>
> BUG=chromium:625748,chromium:625752
> LOG=N
> TEST=test/mjsunit/regress/regress-625752.js
> R=hpayer@chromium.org
>
> Committed: https://crrev.com/ddc75cc1356a58b6cfd63f9da0586e1150496b3d
> Cr-Commit-Position: refs/heads/master@{#37530}

TBR=hpayer@chromium.org,mlippautz@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=chromium:625748,chromium:625752

Committed: https://crrev.com/1791d7bb9ad26d8096bc5e2ed2216ea8b8dcc3cd
Cr-Commit-Position: refs/heads/master@{#37533}
==========

[commit-bot: I haz the power, 2016-07-05 14:43:34]

Patchset 1 (id:??) landed as
https://crrev.com/1791d7bb9ad26d8096bc5e2ed2216ea8b8dcc3cd
Cr-Commit-Position: refs/heads/master@{#37533}