Revert of [heap] Do not invoke GC to make heap iterable.

Revert of [heap] Do not invoke GC to make heap iterable. (patchset #3 id:40001 of https://codereview.chromium.org/1992913004/ )

Reason for revert:
[Sheriff] Speculative revert for some flakes on the waterfall:
https://build.chromium.org/p/client.v8/builders/V8%20Mac%20-%20debug/builds/7409
https://build.chromium.org/p/client.v8/builders/V8%20Linux64%20-%20avx2/builds/7983
https://build.chromium.org/p/client.v8/builders/V8%20Linux64%20-%20internal%20snapshot/builds/4901

Original issue's description:
> [heap] Do not invoke GC to make heap iterable.
>
> This reverts commit 0aa3707dc403a5285d216b01d24faa27375ceec4.
>
> And removes the UnreachableObjectsFilter.
>
> BUG=chromium:580959
> LOG=n
>
> Committed: https://crrev.com/132f89800f560190b4d655adcb4e0eeedd17fd82
> Cr-Commit-Position: refs/heads/master@{#36617}

TBR=yangguo@chromium.org,ulan@chromium.org,hpayer@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=chromium:580959
Committed: https://crrev.com/72f7d9a294451f2cb228fa3a6ae06eab1cf8d7e2
Cr-Commit-Position: refs/heads/master@{#36622}

[Michael Achenbach, 2016-05-31 17:40:11]

The CQ bit was checked by machenbach@chromium.org

[Michael Achenbach, 2016-05-31 17:40:11]

Created Revert of [heap] Do not invoke GC to make heap iterable.

[commit-bot: I haz the power, 2016-05-31 17:40:16]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/2020363002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/2020363002/1

[commit-bot: I haz the power, 2016-05-31 17:40:33]

Description was changed from

==========
Revert of [heap] Do not invoke GC to make heap iterable. (patchset #3 id:40001
of https://codereview.chromium.org/1992913004/ )

Reason for revert:
[Sheriff] Speculative revert for some flakes on the waterfall:
https://build.chromium.org/p/client.v8/builders/V8%20Mac%20-%20debug/builds/7409
https://build.chromium.org/p/client.v8/builders/V8%20Linux64%20-%20avx2/build...
https://build.chromium.org/p/client.v8/builders/V8%20Linux64%20-%20internal%2...

Original issue's description:
> [heap] Do not invoke GC to make heap iterable.
> 
> This reverts commit 0aa3707dc403a5285d216b01d24faa27375ceec4.
> 
> And removes the UnreachableObjectsFilter.
> 
> BUG=chromium:580959
> LOG=n
> 
> Committed: https://crrev.com/132f89800f560190b4d655adcb4e0eeedd17fd82
> Cr-Commit-Position: refs/heads/master@{#36617}

TBR=yangguo@chromium.org,ulan@chromium.org,hpayer@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=chromium:580959
==========

to

==========
Revert of [heap] Do not invoke GC to make heap iterable. (patchset #3 id:40001
of https://codereview.chromium.org/1992913004/ )

Reason for revert:
[Sheriff] Speculative revert for some flakes on the waterfall:
https://build.chromium.org/p/client.v8/builders/V8%20Mac%20-%20debug/builds/7409
https://build.chromium.org/p/client.v8/builders/V8%20Linux64%20-%20avx2/build...
https://build.chromium.org/p/client.v8/builders/V8%20Linux64%20-%20internal%2...

Original issue's description:
> [heap] Do not invoke GC to make heap iterable.
> 
> This reverts commit 0aa3707dc403a5285d216b01d24faa27375ceec4.
> 
> And removes the UnreachableObjectsFilter.
> 
> BUG=chromium:580959
> LOG=n
> 
> Committed: https://crrev.com/132f89800f560190b4d655adcb4e0eeedd17fd82
> Cr-Commit-Position: refs/heads/master@{#36617}

TBR=yangguo@chromium.org,ulan@chromium.org,hpayer@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=chromium:580959
==========

[commit-bot: I haz the power, 2016-05-31 17:40:33]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-05-31 17:43:30]

Description was changed from

==========
Revert of [heap] Do not invoke GC to make heap iterable. (patchset #3 id:40001
of https://codereview.chromium.org/1992913004/ )

Reason for revert:
[Sheriff] Speculative revert for some flakes on the waterfall:
https://build.chromium.org/p/client.v8/builders/V8%20Mac%20-%20debug/builds/7409
https://build.chromium.org/p/client.v8/builders/V8%20Linux64%20-%20avx2/build...
https://build.chromium.org/p/client.v8/builders/V8%20Linux64%20-%20internal%2...

Original issue's description:
> [heap] Do not invoke GC to make heap iterable.
> 
> This reverts commit 0aa3707dc403a5285d216b01d24faa27375ceec4.
> 
> And removes the UnreachableObjectsFilter.
> 
> BUG=chromium:580959
> LOG=n
> 
> Committed: https://crrev.com/132f89800f560190b4d655adcb4e0eeedd17fd82
> Cr-Commit-Position: refs/heads/master@{#36617}

TBR=yangguo@chromium.org,ulan@chromium.org,hpayer@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=chromium:580959
==========

to

==========
Revert of [heap] Do not invoke GC to make heap iterable. (patchset #3 id:40001
of https://codereview.chromium.org/1992913004/ )

Reason for revert:
[Sheriff] Speculative revert for some flakes on the waterfall:
https://build.chromium.org/p/client.v8/builders/V8%20Mac%20-%20debug/builds/7409
https://build.chromium.org/p/client.v8/builders/V8%20Linux64%20-%20avx2/build...
https://build.chromium.org/p/client.v8/builders/V8%20Linux64%20-%20internal%2...

Original issue's description:
> [heap] Do not invoke GC to make heap iterable.
>
> This reverts commit 0aa3707dc403a5285d216b01d24faa27375ceec4.
>
> And removes the UnreachableObjectsFilter.
>
> BUG=chromium:580959
> LOG=n
>
> Committed: https://crrev.com/132f89800f560190b4d655adcb4e0eeedd17fd82
> Cr-Commit-Position: refs/heads/master@{#36617}

TBR=yangguo@chromium.org,ulan@chromium.org,hpayer@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=chromium:580959

Committed: https://crrev.com/72f7d9a294451f2cb228fa3a6ae06eab1cf8d7e2
Cr-Commit-Position: refs/heads/master@{#36622}
==========

[commit-bot: I haz the power, 2016-05-31 17:43:32]

Patchset 1 (id:??) landed as
https://crrev.com/72f7d9a294451f2cb228fa3a6ae06eab1cf8d7e2
Cr-Commit-Position: refs/heads/master@{#36622}