[heap] Move slot filtering logic into sweeper.

[heap] Move slot filtering logic into sweeper.

BUG=chromium:648568
Committed: https://crrev.com/18db69c38c93450c1ae957999fc48c465f111f00
Cr-Commit-Position: refs/heads/master@{#40267}

[Hannes Payer (out of office), 2016-10-13 10:32:04]

The CQ bit was checked by hpayer@chromium.org to run a CQ dry run

[commit-bot: I haz the power, 2016-10-13 10:32:14]

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

[Hannes Payer (out of office), 2016-10-13 10:40:23]

hpayer@chromium.org changed reviewers:
+ mlippautz@chromium.org, ulan@chromium.org

[Hannes Payer (out of office), 2016-10-13 10:41:57]

The CQ bit was checked by hpayer@chromium.org to run a CQ dry run

[commit-bot: I haz the power, 2016-10-13 10:42:07]

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

[Michael Lippautz, 2016-10-13 10:46:41]

Is it possible to write a unittest for RemoveRange for both values of
EmptyBucketMode?

[commit-bot: I haz the power, 2016-10-13 11:11:09]

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

[commit-bot: I haz the power, 2016-10-13 11:11:10]

Dry run: This issue passed the CQ dry run.

[Hannes Payer (out of office), 2016-10-13 12:39:24]

The CQ bit was checked by hpayer@chromium.org to run a CQ dry run

[commit-bot: I haz the power, 2016-10-13 12:39:36]

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

[Hannes Payer (out of office), 2016-10-13 12:39:43]

Done.

[ulan, 2016-10-13 12:51:10]

lgtm

[Michael Lippautz, 2016-10-13 12:51:46]

lgtm

[Hannes Payer (out of office), 2016-10-13 12:58:25]

The CQ bit was checked by hpayer@chromium.org

[Hannes Payer (out of office), 2016-10-13 12:58:25]

The patchset sent to the CQ was uploaded after l-g-t-m from
mlippautz@chromium.org, ulan@chromium.org
Link to the patchset: https://codereview.chromium.org/2418773002/#ps60001
(title: "remove prefree mode")

[commit-bot: I haz the power, 2016-10-13 12:58:34]

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, 2016-10-13 13:43:09]

Committed patchset #4 (id:60001)

[commit-bot: I haz the power, 2016-10-13 13:43:27]

Description was changed from

==========
[heap] Move slot filtering logic into sweeper.

BUG=chromium:648568
==========

to

==========
[heap] Move slot filtering logic into sweeper.

BUG=chromium:648568

Committed: https://crrev.com/18db69c38c93450c1ae957999fc48c465f111f00
Cr-Commit-Position: refs/heads/master@{#40267}
==========

[commit-bot: I haz the power, 2016-10-13 13:43:27]

Patchset 4 (id:??) landed as
https://crrev.com/18db69c38c93450c1ae957999fc48c465f111f00
Cr-Commit-Position: refs/heads/master@{#40267}

[Michael Achenbach, 2016-10-14 06:58:49]

A revert of this CL (patchset #4 id:60001) has been created in
https://codereview.chromium.org/2418053002/ by machenbach@chromium.org.

The reason for reverting is: [Sheriff] Speculative revert for heap corruption on
all platforms, e.g.:
https://build.chromium.org/p/client.v8/builders/V8%20Linux64%20-%20debug/buil...
https://build.chromium.org/p/client.v8/builders/V8%20Linux64%20-%20debug/buil...
https://build.chromium.org/p/client.v8/builders/V8%20Win32/builds/4819
https://build.chromium.org/p/client.v8/builders/V8%20Win32%20-%20nosnap%20-%2...
https://build.chromium.org/p/client.v8/builders/V8%20Mac64%20-%20debug/builds....