Do V8 GC ASAP if system memory is pressured[reland]

Do V8 GC ASAP if system memory is pressured[reland]

Remove worker thread isolate before V8PerIsolateData::destroy

This is a reland of https://codereview.chromium.org/1749073002/

BUG=590975
Committed: https://crrev.com/b28b53323cf9a4e487e081a63b546c210f4878b2
Cr-Commit-Position: refs/heads/master@{#392833}

[hong.zheng, 2016-05-05 10:38:19]

hong.zheng@intel.com changed reviewers:
+ esprehn@chromium.org, jochen@chromium.org, kinuko@chromium.org,
mark@chromium.org, rmcilroy@chromium.org, ulan@chromium.org

[hong.zheng, 2016-05-05 10:38:20]

PTAL

[petefranklin672, 2016-05-05 10:49:20]

petefranklin672@gmail.com changed reviewers:
+ petefranklin672@gmail.com

[petefranklin672, 2016-05-05 10:49:21]

lgtm

[jochen (gone - plz use gerrit), 2016-05-06 09:49:45]

lgtm

[hong.zheng, 2016-05-09 02:01:45]

kinuko@, the difference between the CL and CL 1749073002 is that the CL moves
removeWorkerIsolate to come before V8PerIsolateData::destroy in
WorkerBackingThread.cpp. PTAL. Thanks

[kinuko, 2016-05-09 08:29:50]

lgtm

[hong.zheng, 2016-05-09 09:55:01]

esprehn@ and mark@, PTAL. Thanks

[Mark Mentovai, 2016-05-09 15:14:45]

This looks like the same in base as https://codereview.chromium.org/1749073002/,
so LGTM

[hong.zheng, 2016-05-11 01:07:11]

The CQ bit was checked by hong.zheng@intel.com

[commit-bot: I haz the power, 2016-05-11 01:07:34]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1949153003/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1949153003/1

[commit-bot: I haz the power, 2016-05-11 02:33:53]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-05-11 02:35:27]

Description was changed from

==========
Do V8 GC ASAP if system memory is pressured[reland]

Remove worker thread isolate before V8PerIsolateData::destroy

This is a reland of https://codereview.chromium.org/1749073002/

BUG=590975
==========

to

==========
Do V8 GC ASAP if system memory is pressured[reland]

Remove worker thread isolate before V8PerIsolateData::destroy

This is a reland of https://codereview.chromium.org/1749073002/

BUG=590975

Committed: https://crrev.com/b28b53323cf9a4e487e081a63b546c210f4878b2
Cr-Commit-Position: refs/heads/master@{#392833}
==========

[commit-bot: I haz the power, 2016-05-11 02:35:28]

Patchset 1 (id:??) landed as
https://crrev.com/b28b53323cf9a4e487e081a63b546c210f4878b2
Cr-Commit-Position: refs/heads/master@{#392833}