Take into account freed global handles for heap growing.

Take into account freed global handles for heap growing.

This partially brings back the heuristic from v8 4.44.

BUG=

Committed: https://crrev.com/d5419bb6b4aad8b4e6cc1cb55dd9af0a1889765c
Cr-Commit-Position: refs/heads/master@{#29947}

[ulan, 2015-07-30 13:58:32]

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

[ulan, 2015-07-30 13:58:32]

ptal

https://codereview.chromium.org/1269743002/diff/1/src/heap/heap.cc
File src/heap/heap.cc (right):

https://codereview.chromium.org/1269743002/diff/1/src/heap/heap.cc#newcode5659
src/heap/heap.cc:5659: const int kFreedGlobalHandlesThreshold = 700;
These numbers are from the old heap growing strategy.

[Hannes Payer (out of office), 2015-07-30 14:47:58]

lgtm

[ulan, 2015-07-31 08:29:27]

The CQ bit was checked by ulan@chromium.org

[commit-bot: I haz the power, 2015-07-31 08:29:40]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1269743002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1269743002/1

[commit-bot: I haz the power, 2015-07-31 09:00:05]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-07-31 09:00:19]

Patchset 1 (id:??) landed as
https://crrev.com/d5419bb6b4aad8b4e6cc1cb55dd9af0a1889765c
Cr-Commit-Position: refs/heads/master@{#29947}