Revert of Oilpan: Fix weak processing for IntersectionObserver::m_root

Revert of Oilpan: Fix weak processing for IntersectionObserver::m_root (patchset #3 id:40001 of https://codereview.chromium.org/1594813002/ )

Reason for revert:
This and the parent change introduced some failures,

 https://build.chromium.org/p/chromium.webkit/builders/WebKit%20Linux%20Oilpan%20Leak/builds/16410

backing out for now.

Original issue's description:
> Oilpan: Fix weak processing for IntersectionObserver::m_root
>
> This is a follow-up fix for https://codereview.chromium.org/1591763003/.
> IntersectionObserver::m_root must be cleared in the weak callback when the m_root is dead.
>
> BUG=
>
> Committed: https://crrev.com/2760f06a3c43c8919f4ecae43f460ada20d0990b
> Cr-Commit-Position: refs/heads/master@{#369956}

TBR=szager@chromium.org,haraken@chromium.org
BUG=
NOTRY=true

Committed: https://crrev.com/d802c7fd6a7c47f768885edc1f37a28bd13596ce
Cr-Commit-Position: refs/heads/master@{#369969}

[sof, 2016-01-17 21:25:38]

Created Revert of Oilpan: Fix weak processing for IntersectionObserver::m_root

[commit-bot: I haz the power, 2016-01-17 21:25:52]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1596333002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1596333002/1

[commit-bot: I haz the power, 2016-01-17 21:32:20]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1596333002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1596333002/1

[sof, 2016-01-17 21:34:33]

The CQ bit was unchecked by sigbjornf@opera.com

[sof, 2016-01-17 21:34:59]

Description was changed from

==========
Revert of Oilpan: Fix weak processing for IntersectionObserver::m_root (patchset
#3 id:40001 of https://codereview.chromium.org/1594813002/ )

Reason for revert:
This and the parent change introduced some failures,


https://build.chromium.org/p/chromium.webkit/builders/WebKit%20Linux%20Oilpan...

backing out for now.

Original issue's description:
> Oilpan: Fix weak processing for IntersectionObserver::m_root
> 
> This is a follow-up fix for https://codereview.chromium.org/1591763003/.
> IntersectionObserver::m_root must be cleared in the weak callback when the
m_root is dead.
> 
> BUG=
> 
> Committed: https://crrev.com/2760f06a3c43c8919f4ecae43f460ada20d0990b
> Cr-Commit-Position: refs/heads/master@{#369956}

TBR=szager@chromium.org,haraken@chromium.org
# Not skipping CQ checks because original CL landed more than 1 days ago.
BUG=
==========

to

==========
Revert of Oilpan: Fix weak processing for IntersectionObserver::m_root (patchset
#3 id:40001 of https://codereview.chromium.org/1594813002/ )

Reason for revert:
This and the parent change introduced some failures,


https://build.chromium.org/p/chromium.webkit/builders/WebKit%20Linux%20Oilpan...

backing out for now.

Original issue's description:
> Oilpan: Fix weak processing for IntersectionObserver::m_root
> 
> This is a follow-up fix for https://codereview.chromium.org/1591763003/.
> IntersectionObserver::m_root must be cleared in the weak callback when the
m_root is dead.
> 
> BUG=
> 
> Committed: https://crrev.com/2760f06a3c43c8919f4ecae43f460ada20d0990b
> Cr-Commit-Position: refs/heads/master@{#369956}

TBR=szager@chromium.org,haraken@chromium.org
BUG=
NOTRY=true
==========

[sof, 2016-01-17 21:35:06]

The CQ bit was checked by sigbjornf@opera.com

[commit-bot: I haz the power, 2016-01-17 21:35:18]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1596333002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1596333002/1

[commit-bot: I haz the power, 2016-01-17 21:36:11]

Description was changed from

==========
Revert of Oilpan: Fix weak processing for IntersectionObserver::m_root (patchset
#3 id:40001 of https://codereview.chromium.org/1594813002/ )

Reason for revert:
This and the parent change introduced some failures,


https://build.chromium.org/p/chromium.webkit/builders/WebKit%20Linux%20Oilpan...

backing out for now.

Original issue's description:
> Oilpan: Fix weak processing for IntersectionObserver::m_root
> 
> This is a follow-up fix for https://codereview.chromium.org/1591763003/.
> IntersectionObserver::m_root must be cleared in the weak callback when the
m_root is dead.
> 
> BUG=
> 
> Committed: https://crrev.com/2760f06a3c43c8919f4ecae43f460ada20d0990b
> Cr-Commit-Position: refs/heads/master@{#369956}

TBR=szager@chromium.org,haraken@chromium.org
BUG=
NOTRY=true
==========

to

==========
Revert of Oilpan: Fix weak processing for IntersectionObserver::m_root (patchset
#3 id:40001 of https://codereview.chromium.org/1594813002/ )

Reason for revert:
This and the parent change introduced some failures,


https://build.chromium.org/p/chromium.webkit/builders/WebKit%20Linux%20Oilpan...

backing out for now.

Original issue's description:
> Oilpan: Fix weak processing for IntersectionObserver::m_root
> 
> This is a follow-up fix for https://codereview.chromium.org/1591763003/.
> IntersectionObserver::m_root must be cleared in the weak callback when the
m_root is dead.
> 
> BUG=
> 
> Committed: https://crrev.com/2760f06a3c43c8919f4ecae43f460ada20d0990b
> Cr-Commit-Position: refs/heads/master@{#369956}

TBR=szager@chromium.org,haraken@chromium.org
BUG=
NOTRY=true
==========

[commit-bot: I haz the power, 2016-01-17 21:36:12]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-01-17 21:37:35]

Description was changed from

==========
Revert of Oilpan: Fix weak processing for IntersectionObserver::m_root (patchset
#3 id:40001 of https://codereview.chromium.org/1594813002/ )

Reason for revert:
This and the parent change introduced some failures,


https://build.chromium.org/p/chromium.webkit/builders/WebKit%20Linux%20Oilpan...

backing out for now.

Original issue's description:
> Oilpan: Fix weak processing for IntersectionObserver::m_root
> 
> This is a follow-up fix for https://codereview.chromium.org/1591763003/.
> IntersectionObserver::m_root must be cleared in the weak callback when the
m_root is dead.
> 
> BUG=
> 
> Committed: https://crrev.com/2760f06a3c43c8919f4ecae43f460ada20d0990b
> Cr-Commit-Position: refs/heads/master@{#369956}

TBR=szager@chromium.org,haraken@chromium.org
BUG=
NOTRY=true
==========

to

==========
Revert of Oilpan: Fix weak processing for IntersectionObserver::m_root (patchset
#3 id:40001 of https://codereview.chromium.org/1594813002/ )

Reason for revert:
This and the parent change introduced some failures,


https://build.chromium.org/p/chromium.webkit/builders/WebKit%20Linux%20Oilpan...

backing out for now.

Original issue's description:
> Oilpan: Fix weak processing for IntersectionObserver::m_root
>
> This is a follow-up fix for https://codereview.chromium.org/1591763003/.
> IntersectionObserver::m_root must be cleared in the weak callback when the
m_root is dead.
>
> BUG=
>
> Committed: https://crrev.com/2760f06a3c43c8919f4ecae43f460ada20d0990b
> Cr-Commit-Position: refs/heads/master@{#369956}

TBR=szager@chromium.org,haraken@chromium.org
BUG=
NOTRY=true

Committed: https://crrev.com/d802c7fd6a7c47f768885edc1f37a28bd13596ce
Cr-Commit-Position: refs/heads/master@{#369969}
==========

[commit-bot: I haz the power, 2016-01-17 21:37:36]

Patchset 1 (id:??) landed as
https://crrev.com/d802c7fd6a7c47f768885edc1f37a28bd13596ce
Cr-Commit-Position: refs/heads/master@{#369969}

[haraken, 2016-01-18 03:20:27]

LGTM