Revert of [heap] Refactor heap object iteration

Revert of [heap] Refactor heap object iteration (patchset #6 id:100001 of https://codereview.chromium.org/2516303006/ )

Reason for revert:
Breaks msan:
https://build.chromium.org/p/client.v8/builders/V8%20Linux%20-%20arm64%20-%20sim%20-%20MSAN/builds/12103

Original issue's description:
> [heap] Refactor heap object iteration
>
> BUG=
>
> Committed: https://crrev.com/d094fa76f3dd0bb5fc3f4c669762aa97d88e0f76
> Cr-Commit-Position: refs/heads/master@{#41226}

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=

Committed: https://crrev.com/1a4294b1811837e07cb5a9e8db0c2826f744aa9c
Cr-Commit-Position: refs/heads/master@{#41230}

[Michael Achenbach, 2016-11-23 15:28:04]

The CQ bit was checked by machenbach@chromium.org

[Michael Achenbach, 2016-11-23 15:28:04]

Created Revert of [heap] Refactor heap object iteration

[commit-bot: I haz the power, 2016-11-23 15:28:13]

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, 2016-11-23 15:28:31]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1479914884033960, "parent_rev":
"52f2cdabdc7b278b9668fd22ddfca9b4864a06e9", "commit_rev":
"cc96b2529b330abf3456eb4f485087f0558950f0"}

[commit-bot: I haz the power, 2016-11-23 15:28:34]

Description was changed from

==========
Revert of [heap] Refactor heap object iteration (patchset #6 id:100001 of
https://codereview.chromium.org/2516303006/ )

Reason for revert:
Breaks msan:
https://build.chromium.org/p/client.v8/builders/V8%20Linux%20-%20arm64%20-%20...

Original issue's description:
> [heap] Refactor heap object iteration
> 
> BUG=
> 
> Committed: https://crrev.com/d094fa76f3dd0bb5fc3f4c669762aa97d88e0f76
> Cr-Commit-Position: refs/heads/master@{#41226}

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=
==========

to

==========
Revert of [heap] Refactor heap object iteration (patchset #6 id:100001 of
https://codereview.chromium.org/2516303006/ )

Reason for revert:
Breaks msan:
https://build.chromium.org/p/client.v8/builders/V8%20Linux%20-%20arm64%20-%20...

Original issue's description:
> [heap] Refactor heap object iteration
> 
> BUG=
> 
> Committed: https://crrev.com/d094fa76f3dd0bb5fc3f4c669762aa97d88e0f76
> Cr-Commit-Position: refs/heads/master@{#41226}

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=
==========

[commit-bot: I haz the power, 2016-11-23 15:28:35]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-11-23 15:28:58]

Description was changed from

==========
Revert of [heap] Refactor heap object iteration (patchset #6 id:100001 of
https://codereview.chromium.org/2516303006/ )

Reason for revert:
Breaks msan:
https://build.chromium.org/p/client.v8/builders/V8%20Linux%20-%20arm64%20-%20...

Original issue's description:
> [heap] Refactor heap object iteration
> 
> BUG=
> 
> Committed: https://crrev.com/d094fa76f3dd0bb5fc3f4c669762aa97d88e0f76
> Cr-Commit-Position: refs/heads/master@{#41226}

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=
==========

to

==========
Revert of [heap] Refactor heap object iteration (patchset #6 id:100001 of
https://codereview.chromium.org/2516303006/ )

Reason for revert:
Breaks msan:
https://build.chromium.org/p/client.v8/builders/V8%20Linux%20-%20arm64%20-%20...

Original issue's description:
> [heap] Refactor heap object iteration
>
> BUG=
>
> Committed: https://crrev.com/d094fa76f3dd0bb5fc3f4c669762aa97d88e0f76
> Cr-Commit-Position: refs/heads/master@{#41226}

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=

Committed: https://crrev.com/1a4294b1811837e07cb5a9e8db0c2826f744aa9c
Cr-Commit-Position: refs/heads/master@{#41230}
==========

[commit-bot: I haz the power, 2016-11-23 15:28:59]

Patchset 1 (id:??) landed as
https://crrev.com/1a4294b1811837e07cb5a9e8db0c2826f744aa9c
Cr-Commit-Position: refs/heads/master@{#41230}