[heap] Reland: Take page lock when scavenging old to new references in Scavenger.

[heap] Reland: Take page lock when scavenging old to new references in Scavenger.

BUG=v8:5807
Review-Url: https://codereview.chromium.org/2826593004
Cr-Commit-Position: refs/heads/master@{#44697}
Committed: https://chromium.googlesource.com/v8/v8/+/26bc5906295100300252463e2f5914279e30970f

[Hannes Payer (out of office), 2017-04-18 15:40:05]

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

[commit-bot: I haz the power, 2017-04-18 15:40:08]

Dry run: 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, 2017-04-18 16:08:43]

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

[commit-bot: I haz the power, 2017-04-18 16:08:44]

Dry run: This issue passed the CQ dry run.

[Michael Lippautz, 2017-04-18 16:12:19]

mlippautz@chromium.org changed reviewers:
+ mlippautz@chromium.org

[Michael Lippautz, 2017-04-18 16:12:19]

lgtm

[Hannes Payer (out of office), 2017-04-18 17:30:36]

The CQ bit was checked by hpayer@chromium.org

[commit-bot: I haz the power, 2017-04-18 17:30:41]

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, 2017-04-18 17:32:17]

CQ is committing da patch.

Bot data: {"patchset_id": 20001, "attempt_start_ts": 1492536636545870,
"parent_rev": "2e4b86b0de256962eb937c47ad37089a226110ad", "commit_rev":
"26bc5906295100300252463e2f5914279e30970f"}

[commit-bot: I haz the power, 2017-04-18 17:32:24]

Description was changed from

==========
[heap] Reland: Take page lock when scavenging old to new references in
Scavenger.

BUG=v8:5807
==========

to

==========
[heap] Reland: Take page lock when scavenging old to new references in
Scavenger.

BUG=v8:5807

Review-Url: https://codereview.chromium.org/2826593004
Cr-Commit-Position: refs/heads/master@{#44697}
Committed:
https://chromium.googlesource.com/v8/v8/+/26bc5906295100300252463e2f5914279e3...
==========

[commit-bot: I haz the power, 2017-04-18 17:32:25]

Committed patchset #2 (id:20001) as
https://chromium.googlesource.com/v8/v8/+/26bc5906295100300252463e2f5914279e3...