[Oilpan] Replace raw pointer with UntracedMember

Replace raw pointer with UntracedMember

This is a follow-up CL for http://crrev.com/1397073002
static_assert in HashTable ignored this case because
HTMLPlugInElement is forward declared in this file and
we cannot know it is GCed class.

BUG=515524
Committed: https://crrev.com/66656cedd1015426c364ccbb4e142ee865cb9013
Cr-Commit-Position: refs/heads/master@{#360556}

[peria, 2015-11-19 08:46:25]

Description was changed from

==========
[Oilpan] Replace raw pointer with UntracedMember

BUG=
==========

to

==========
[Oilpan] Replace raw pointer with UntracedMember

This is a follow-up CL for http://crrev.com/1397073002
BUG=515524
==========

[peria, 2015-11-19 08:49:33]

Description was changed from

==========
[Oilpan] Replace raw pointer with UntracedMember

This is a follow-up CL for http://crrev.com/1397073002
BUG=515524
==========

to

==========
Replace raw pointer with UntracedMember

This is a follow-up CL for http://crrev.com/1397073002


BUG=515524
==========

[peria, 2015-11-19 09:06:31]

peria@chromium.org changed reviewers:
+ oilpan-reviews@chromium.org

[peria, 2015-11-19 09:06:31]

PTL

This change tells us that we also need a full definition
of GCedClass to catch up all OffHeapCollection<GCedClass*>.

[haraken, 2015-11-19 09:07:34]

On 2015/11/19 09:06:31, peria wrote:
> PTL
> 
> This change tells us that we also need a full definition
> of GCedClass to catch up all OffHeapCollection<GCedClass*>.

LGTM

[peria, 2015-11-19 09:11:56]

Description was changed from

==========
Replace raw pointer with UntracedMember

This is a follow-up CL for http://crrev.com/1397073002


BUG=515524
==========

to

==========
Replace raw pointer with UntracedMember

This is a follow-up CL for http://crrev.com/1397073002
static_assert in HashTable ignored this case because
HTMLPlugInElement is forward declared in this file and
we cannot know it is GCed class.


BUG=515524
==========

[peria, 2015-11-19 09:12:31]

The CQ bit was checked by peria@chromium.org

[commit-bot: I haz the power, 2015-11-19 09:13:14]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1459473005/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1459473005/1

[commit-bot: I haz the power, 2015-11-19 10:42:47]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-11-19 10:43:53]

Patchset 1 (id:??) landed as
https://crrev.com/66656cedd1015426c364ccbb4e142ee865cb9013
Cr-Commit-Position: refs/heads/master@{#360556}