Remove Sk prefix from some bench classes.

bench/TileBench.cpp

Index: bench/TileBench.cpp
diff --git a/bench/TileBench.cpp b/bench/TileBench.cpp
index 12c9629ee23d163014eec323b9a6c4640664b48d..7487b1b8ea6aac91a70fe1acf7c1e67fa5ce63ad 100644
--- a/bench/TileBench.cpp
+++ b/bench/TileBench.cpp
@@ -6,7 +6,7 @@
  * found in the LICENSE file.
  */
 
-#include "SkBenchmark.h"
+#include "Benchmark.h"
 #include "SkBitmap.h"
 #include "SkCanvas.h"
 #include "SkShader.h"
@@ -28,7 +28,7 @@ static void create_gradient(SkBitmap* bm) {
 
 // Test out the special case of a tiled 1xN texture. Test out opacity,
 // filtering and the different tiling modes
-class ConstXTileBench : public SkBenchmark {
+class ConstXTileBench : public Benchmark {
     SkPaint             fPaint;
     SkString            fName;
     bool                fDoFilter;
@@ -111,7 +111,7 @@ protected:
     }
 
 private:
-    typedef SkBenchmark INHERITED;
+    typedef Benchmark INHERITED;
 };
 
 DEF_BENCH(return new ConstXTileBench(SkShader::kRepeat_TileMode, SkShader::kRepeat_TileMode, false, false, true))