nanobench: Add some Valgrind failure paranoia.

nanobench: Add some Valgrind failure paranoia.

Trying to figure out

http://build.chromium.org/p/client.skia/builders/Test-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Release-Valgrind/builds/586/steps/nanobench/logs/stdio

BUG=skia:4482
Committed: https://skia.googlesource.com/skia/+/4dfdbb19ba861bbd5e1a306bb23f32464ea5e2c5

[mtklein_C, 2015-10-20 14:35:31]

mtklein@chromium.org changed reviewers:
+ msarett@google.com

[mtklein_C, 2015-10-20 14:35:34]

The CQ bit was checked by mtklein@chromium.org

[commit-bot: I haz the power, 2015-10-20 14:35:42]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1418633002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1418633002/1

[commit-bot: I haz the power, 2015-10-20 14:35:43]

Note for Reviewers:
The CQ is waiting for an approval.
If you believe that the CL is not ready yet, or if you would like to L-G-T-M
with comments then please uncheck the CQ checkbox.

Waiting for LGTM from valid reviewer(s) till 2015-10-20 20:35 UTC

[mtklein_C, 2015-10-20 14:38:17]

Description was changed from

==========
nanobench: Add some Valgrind failure paranoia.

Trying to figure out

http://build.chromium.org/p/client.skia/builders/Test-Ubuntu-GCC-GCE-CPU-AVX2...

BUG=skia:
==========

to

==========
nanobench: Add some Valgrind failure paranoia.

Trying to figure out

http://build.chromium.org/p/client.skia/builders/Test-Ubuntu-GCC-GCE-CPU-AVX2...

BUG=skia:4482
==========

[mtklein_C, 2015-10-20 14:38:20]

The CQ bit was unchecked by mtklein@chromium.org

[mtklein_C, 2015-10-20 14:38:22]

The CQ bit was checked by mtklein@chromium.org

[msarett, 2015-10-20 14:38:25]

lgtm

[commit-bot: I haz the power, 2015-10-20 14:38:26]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1418633002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1418633002/1

[commit-bot: I haz the power, 2015-10-20 14:45:33]

Committed patchset #1 (id:1) as
https://skia.googlesource.com/skia/+/4dfdbb19ba861bbd5e1a306bb23f32464ea5e2c5