[heap] Improve IncrementalMarking::UpdateMarkingDequeAfterScavenge.

[heap] Improve IncrementalMarking::UpdateMarkingDequeAfterScavenge.

Black allocation during scavenges will push objects on the marking deque that point to to-space. They should not be cleared.

BUG=chromium:561449
LOG=n

Committed: https://crrev.com/0ecdd93282a0ff9a2bb4ff8d2a3401fe1368124d
Cr-Commit-Position: refs/heads/master@{#33875}

[Hannes Payer (out of office), 2016-02-10 19:22:05]

Description was changed from

==========
[heap] Improve IncrementalMarking::UpdateMarkingDequeAfterScavenge.

BUG=chromium:561449
LOG=n
==========

to

==========
[heap] Improve IncrementalMarking::UpdateMarkingDequeAfterScavenge.

Black allocation during scavenges will push objects on the marking deque that
point to to-space. They should not be cleared. 

BUG=chromium:561449
LOG=n
==========

[Hannes Payer (out of office), 2016-02-10 19:22:06]

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

[ulan, 2016-02-10 19:32:31]

lgtm

[Michael Lippautz, 2016-02-10 19:44:10]

LGTM, nice find ;)

[Hannes Payer (out of office), 2016-02-10 19:59:49]

The CQ bit was checked by hpayer@chromium.org

[commit-bot: I haz the power, 2016-02-10 20:00:17]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1683983003/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1683983003/1

[commit-bot: I haz the power, 2016-02-10 20:01:27]

Description was changed from

==========
[heap] Improve IncrementalMarking::UpdateMarkingDequeAfterScavenge.

Black allocation during scavenges will push objects on the marking deque that
point to to-space. They should not be cleared. 

BUG=chromium:561449
LOG=n
==========

to

==========
[heap] Improve IncrementalMarking::UpdateMarkingDequeAfterScavenge.

Black allocation during scavenges will push objects on the marking deque that
point to to-space. They should not be cleared. 

BUG=chromium:561449
LOG=n
==========

[commit-bot: I haz the power, 2016-02-10 20:01:28]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-02-11 10:40:55]

Description was changed from

==========
[heap] Improve IncrementalMarking::UpdateMarkingDequeAfterScavenge.

Black allocation during scavenges will push objects on the marking deque that
point to to-space. They should not be cleared. 

BUG=chromium:561449
LOG=n
==========

to

==========
[heap] Improve IncrementalMarking::UpdateMarkingDequeAfterScavenge.

Black allocation during scavenges will push objects on the marking deque that
point to to-space. They should not be cleared.

BUG=chromium:561449
LOG=n

Committed: https://crrev.com/0ecdd93282a0ff9a2bb4ff8d2a3401fe1368124d
Cr-Commit-Position: refs/heads/master@{#33875}
==========

[commit-bot: I haz the power, 2016-02-11 10:40:56]

Patchset 1 (id:??) landed as
https://crrev.com/0ecdd93282a0ff9a2bb4ff8d2a3401fe1368124d
Cr-Commit-Position: refs/heads/master@{#33875}