[heap] Reland use larger marking steps during external allocation pressure

[heap] Reland use larger marking steps during external allocation pressure

This reverts commit 195eab4619ace704d34ebd00b197ff8d7c739df7.

BUG=chromium:626082, chromium:728228
Review-Url: https://codereview.chromium.org/2931393002
Cr-Commit-Position: refs/heads/master@{#45843}
Committed: https://chromium.googlesource.com/v8/v8/+/b011c781cf639194aa596eb9cbffb42cf63635e5

[ulan, 2017-06-12 09:36:49]

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

[ulan, 2017-06-12 09:36:49]

lgtm

[Hannes Payer (out of office), 2017-06-12 09:37:06]

The CQ bit was checked by hpayer@chromium.org

[commit-bot: I haz the power, 2017-06-12 09:37:16]

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, 2017-06-12 10:37:51]

CQ is committing da patch.

Bot data: {"patchset_id": 20001, "attempt_start_ts": 1497260226486650,
"parent_rev": "c31302d03144833d0c4d938525d82b1e9f16351b", "commit_rev":
"b011c781cf639194aa596eb9cbffb42cf63635e5"}

[commit-bot: I haz the power, 2017-06-12 10:38:01]

Description was changed from

==========
[heap] Reland use larger marking steps during external allocation pressure

This reverts commit 195eab4619ace704d34ebd00b197ff8d7c739df7.

BUG=chromium:626082, chromium:728228
==========

to

==========
[heap] Reland use larger marking steps during external allocation pressure

This reverts commit 195eab4619ace704d34ebd00b197ff8d7c739df7.

BUG=chromium:626082, chromium:728228

Review-Url: https://codereview.chromium.org/2931393002
Cr-Commit-Position: refs/heads/master@{#45843}
Committed:
https://chromium.googlesource.com/v8/v8/+/b011c781cf639194aa596eb9cbffb42cf63...
==========

[commit-bot: I haz the power, 2017-06-12 10:38:02]

Committed patchset #2 (id:20001) as
https://chromium.googlesource.com/v8/v8/+/b011c781cf639194aa596eb9cbffb42cf63...