Simplify pre+post GC ThreadState steps.

Simplify pre+post GC ThreadState steps.

No need to involve the ThreadHeap for these, as they're entirely
handled by the ThreadState now.

R=
BUG=671856
Review-Url: https://codereview.chromium.org/2774473003
Cr-Commit-Position: refs/heads/master@{#459373}
Committed: https://chromium.googlesource.com/chromium/src/+/a6f6765d9e37b6f1bb499191bf07b8c24bd04041

[sof, 2017-03-23 18:59:51]

The CQ bit was checked by sigbjornf@opera.com to run a CQ dry run

[commit-bot: I haz the power, 2017-03-23 19:00:27]

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

[sof, 2017-03-23 19:01:37]

sigbjornf@opera.com changed reviewers:
+ oilpan-reviews@chromium.org

[sof, 2017-03-23 19:01:37]

please take a look.

[commit-bot: I haz the power, 2017-03-23 21:44:11]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2017-03-23 21:44:12]

Dry run: Try jobs failed on following builders:
  win_chromium_rel_ng on master.tryserver.chromium.win (JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.win/builders/win_chromium_rel_...)

[haraken, 2017-03-23 23:40:05]

LGTM

[sof, 2017-03-24 04:47:51]

The CQ bit was checked by sigbjornf@opera.com

[commit-bot: I haz the power, 2017-03-24 04:48:11]

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, 2017-03-24 06:29:43]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1490330871586800, "parent_rev":
"fd1e60f0bee4b6b25d898f4f4f859aa38d1a9643", "commit_rev":
"a6f6765d9e37b6f1bb499191bf07b8c24bd04041"}

[commit-bot: I haz the power, 2017-03-24 06:30:47]

Description was changed from

==========
Simplify pre+post GC ThreadState steps.

No need to involve the ThreadHeap for these, as they're entirely
handled by the ThreadState now.

R=
BUG=671856
==========

to

==========
Simplify pre+post GC ThreadState steps.

No need to involve the ThreadHeap for these, as they're entirely
handled by the ThreadState now.

R=
BUG=671856

Review-Url: https://codereview.chromium.org/2774473003
Cr-Commit-Position: refs/heads/master@{#459373}
Committed:
https://chromium.googlesource.com/chromium/src/+/a6f6765d9e37b6f1bb499191bf07...
==========

[commit-bot: I haz the power, 2017-03-24 06:30:48]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/chromium/src/+/a6f6765d9e37b6f1bb499191bf07...