[profiler] sampled allocations should be marked as independent

[profiler] sampled allocations should be marked as independent

Sampling heap profiler keeps weak references. These should be marked
independent so that the weak callback can be dispatched on new space
collections.

BUG=v8:4959
LOG=N
R=ulan@chromium.org

Committed: https://crrev.com/9622696b5e225ca642f9ea88c0473d59cde062c2
Cr-Commit-Position: refs/heads/master@{#36012}

[ofrobots, 2016-05-04 08:19:06]

The CQ bit was checked by ofrobots@google.com to run a CQ dry run

[commit-bot: I haz the power, 2016-05-04 08:19:12]

Dry run: CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1945193002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1945193002/1

[commit-bot: I haz the power, 2016-05-04 08:42:27]

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

[commit-bot: I haz the power, 2016-05-04 08:42:27]

Dry run: This issue passed the CQ dry run.

[ulan, 2016-05-04 09:38:09]

lgtm

[ofrobots, 2016-05-04 09:53:51]

The CQ bit was checked by ofrobots@google.com

[commit-bot: I haz the power, 2016-05-04 09:53:59]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1945193002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1945193002/1

[commit-bot: I haz the power, 2016-05-04 09:58:21]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-05-04 09:59:50]

Description was changed from

==========
[profiler] sampled allocations should be marked as independent

Sampling heap profiler keeps weak references. These should be marked
independent so that the weak callback can be dispatched on new space
collections.

BUG=v8:4959
LOG=N
R=ulan@chromium.org
==========

to

==========
[profiler] sampled allocations should be marked as independent

Sampling heap profiler keeps weak references. These should be marked
independent so that the weak callback can be dispatched on new space
collections.

BUG=v8:4959
LOG=N
R=ulan@chromium.org

Committed: https://crrev.com/9622696b5e225ca642f9ea88c0473d59cde062c2
Cr-Commit-Position: refs/heads/master@{#36012}
==========

[commit-bot: I haz the power, 2016-05-04 09:59:51]

Patchset 1 (id:??) landed as
https://crrev.com/9622696b5e225ca642f9ea88c0473d59cde062c2
Cr-Commit-Position: refs/heads/master@{#36012}