Split SetConcatMatrix44Bench to cover both internal paths.

Split SetConcatMatrix44Bench to cover both internal paths.

The existing bench only tests the fast path, but we're looking to speed
up the general case.  It'd be nice to be able to measure that speedup.

BUG=skia:

Committed: https://skia.googlesource.com/skia/+/c6c6a91ff2356163d9abf9233ff0f025738940f8

[mtklein_C, 2015-06-08 14:04:09]

mtklein@chromium.org changed reviewers:
+ reed@google.com, yang.zhang@linaro.org

[mtklein_C, 2015-06-08 14:04:14]

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

[commit-bot: I haz the power, 2015-06-08 14:04:24]

Dry run: CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1146953003/20001

[commit-bot: I haz the power, 2015-06-08 14:10:28]

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

[commit-bot: I haz the power, 2015-06-08 14:10:29]

Dry run: This issue passed the CQ dry run.

[yang.zhang, 2015-06-09 08:53:41]

After testing, the new bench can cover both the fast path and the general case.

LGTM

[mtklein, 2015-06-09 11:41:29]

The CQ bit was checked by mtklein@google.com

[commit-bot: I haz the power, 2015-06-09 11:41:41]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1146953003/20001

[commit-bot: I haz the power, 2015-06-09 11:41:43]

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 2015-06-09 17:41 UTC

[mtklein, 2015-06-09 11:42:26]

lgtm

[commit-bot: I haz the power, 2015-06-09 11:44:11]

Committed patchset #2 (id:20001) as
https://skia.googlesource.com/skia/+/c6c6a91ff2356163d9abf9233ff0f025738940f8