Fix MSAN warning on simulator during cpu profiling.

Fix MSAN warning on simulator during cpu profiling.

CPU profiler probes stack frame to find if it's in a valid
state. Under simulator it might happen the frame is not
initialized and MSAN repors that. That's totally ok.
Suppress the warning.

BUG=v8:4751
LOG=N

Committed: https://crrev.com/c2abfe75ea5d6e4552791fd2a667b493a92ff387
Cr-Commit-Position: refs/heads/master@{#34061}

[alph, 2016-02-13 03:03:02]

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

[commit-bot: I haz the power, 2016-02-13 03:03:11]

Dry run: CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1700533003/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1700533003/1

[commit-bot: I haz the power, 2016-02-13 03:25:03]

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

[commit-bot: I haz the power, 2016-02-13 03:25:03]

Dry run: This issue passed the CQ dry run.

[alph, 2016-02-16 18:35:06]

alph@chromium.org changed reviewers:
+ titzer@chromium.org, ulan@chromium.org

[alph, 2016-02-16 18:35:06]

ptal

[titzer, 2016-02-17 08:16:05]

lgtm

[alph, 2016-02-17 08:40:24]

The CQ bit was checked by alph@chromium.org

[commit-bot: I haz the power, 2016-02-17 08:40:28]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1700533003/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1700533003/1

[commit-bot: I haz the power, 2016-02-17 09:08:03]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-02-17 09:08:23]

Description was changed from

==========
Fix MSAN warning on simulator during cpu profiling.

CPU profiler probes stack frame to find if it's in a valid
state. Under simulator it might happen the frame is not
initialized and MSAN repors that. That's totally ok.
Suppress the warning.

BUG=v8:4751
LOG=N
==========

to

==========
Fix MSAN warning on simulator during cpu profiling.

CPU profiler probes stack frame to find if it's in a valid
state. Under simulator it might happen the frame is not
initialized and MSAN repors that. That's totally ok.
Suppress the warning.

BUG=v8:4751
LOG=N

Committed: https://crrev.com/c2abfe75ea5d6e4552791fd2a667b493a92ff387
Cr-Commit-Position: refs/heads/master@{#34061}
==========

[commit-bot: I haz the power, 2016-02-17 09:08:24]

Patchset 1 (id:??) landed as
https://crrev.com/c2abfe75ea5d6e4552791fd2a667b493a92ff387
Cr-Commit-Position: refs/heads/master@{#34061}