Remove Sk prefix from some bench classes.

bench/LineBench.cpp

 /*
  * Copyright 2012 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
-#include "SkBenchmark.h"
+#include "Benchmark.h"
 #include "SkBitmap.h"
 #include "SkCanvas.h"
 #include "SkColorPriv.h"
 #include "SkPaint.h"
 #include "SkRandom.h"
 #include "SkShader.h"
 #include "SkString.h"
 #include "SkTArray.h"
 
 
-class LineBench : public SkBenchmark {
+class LineBench : public Benchmark {
     SkScalar    fStrokeWidth;
     bool        fDoAA;
     SkString    fName;
     enum {
         PTS = 500,
     };
     SkPoint fPts[PTS];
 
 public:
     LineBench(SkScalar width, bool doAA)  {
@@ skipping 19 matching lines @@
         paint.setStyle(SkPaint::kStroke_Style);
         paint.setAntiAlias(fDoAA);
         paint.setStrokeWidth(fStrokeWidth);
 
         for (int i = 0; i < loops; i++) {
             canvas->drawPoints(SkCanvas::kLines_PointMode, PTS, fPts, paint);
         }
     }
 
 private:
-    typedef SkBenchmark INHERITED;
+    typedef Benchmark INHERITED;
 };
 
 DEF_BENCH(return new LineBench(0,            false);)
 DEF_BENCH(return new LineBench(SK_Scalar1,   false);)
 DEF_BENCH(return new LineBench(0,            true);)
 DEF_BENCH(return new LineBench(SK_Scalar1/2, true);)
 DEF_BENCH(return new LineBench(SK_Scalar1,   true);)