Remove Sk prefix from some bench classes.

Remove Sk prefix from some bench classes.

This idea came while commenting on
https://codereview.chromium.org/343583005/

Since SkBenchmark, SkBenchLogger and SkGMBench are not part of the Skia library,
they should not have the Sk prefix.

BUG=None
TEST=make all
R=mtklein@google.com

Committed: https://skia.googlesource.com/skia/+/f168b86d7fafc5c20c87bebc6fd393cb17e120ca

[mtklein, 2014-06-19 18:45:17]

lgtm

https://codereview.chromium.org/347823004/diff/20001/bench/SkGMBench.h
File bench/SkGMBench.h (right):

https://codereview.chromium.org/347823004/diff/20001/bench/SkGMBench.h#newcode15
bench/SkGMBench.h:15: class SkGMBench : public Benchmark {
This too can probably become GMBench.

https://codereview.chromium.org/347823004/diff/20001/bench/benchmain.cpp
File bench/benchmain.cpp (right):

https://codereview.chromium.org/347823004/diff/20001/bench/benchmain.cpp#newc...
bench/benchmain.cpp:196: Benchmark::Backend backend;
Line this guy up again?

[tfarina, 2014-06-19 19:02:01]

https://codereview.chromium.org/347823004/diff/20001/bench/SkGMBench.h
File bench/SkGMBench.h (right):

https://codereview.chromium.org/347823004/diff/20001/bench/SkGMBench.h#newcode15
bench/SkGMBench.h:15: class SkGMBench : public Benchmark {
On 2014/06/19 18:45:17, mtklein wrote:
> This too can probably become GMBench.

Done.

https://codereview.chromium.org/347823004/diff/20001/bench/benchmain.cpp
File bench/benchmain.cpp (right):

https://codereview.chromium.org/347823004/diff/20001/bench/benchmain.cpp#newc...
bench/benchmain.cpp:196: Benchmark::Backend backend;
On 2014/06/19 18:45:17, mtklein wrote:
> Line this guy up again?

Done.

[tfarina, 2014-06-19 19:02:25]

The CQ bit was checked by tfarina@chromium.org

[commit-bot: I haz the power, 2014-06-19 19:03:07]

CQ is trying da patch. Follow status at
 https://skia-tree-status.appspot.com/cq/tfarina@chromium.org/347823004/40001

[commit-bot: I haz the power, 2014-06-19 19:32:35]

Change committed as f168b86d7fafc5c20c87bebc6fd393cb17e120ca