Save/Restore around bench runs.

Save/Restore around bench runs.

BUG=skia:

Committed: https://skia.googlesource.com/skia/+/38c05871c66292b1db7a98a67df7ee7cfd12bca3

[mtklein, 2014-10-02 19:22:32]

mtklein@google.com changed reviewers:
+ mtklein@google.com, reed@google.com

[mtklein, 2014-10-02 19:22:36]

The CQ bit was checked by mtklein@google.com

[mtklein, 2014-10-02 19:23:08]

The CQ bit was unchecked by mtklein@google.com

[mtklein, 2014-10-02 19:23:25]

The CQ bit was checked by mtklein@google.com

[commit-bot: I haz the power, 2014-10-02 19:23:32]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/619353002/20001

[commit-bot: I haz the power, 2014-10-02 19:23:33]

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 a valid reviewer till 2014-10-03 01:23 UTC

[bsalomon, 2014-10-02 19:26:39]

bsalomon@google.com changed reviewers:
+ bsalomon@google.com

[bsalomon, 2014-10-02 19:26:39]

lgtm

[reed1, 2014-10-02 19:34:54]

lgtm

[commit-bot: I haz the power, 2014-10-02 20:04:02]

Committed patchset #2 (id:20001) as 38c05871c66292b1db7a98a67df7ee7cfd12bca3