Remove Sk prefix from some bench classes.

bench/MagnifierBench.cpp

 /*
  * Copyright 2013 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 "SkBitmapDevice.h"
 #include "SkCanvas.h"
 #include "SkMagnifierImageFilter.h"
 #include "SkRandom.h"
 
 #define FILTER_WIDTH_SMALL  32
 #define FILTER_HEIGHT_SMALL 32
 #define FILTER_WIDTH_LARGE  256
 #define FILTER_HEIGHT_LARGE 256
 
-class MagnifierBench : public SkBenchmark {
+class MagnifierBench : public Benchmark {
 public:
     MagnifierBench(bool small) :
         fIsSmall(small), fInitialized(false) {
     }
 
 protected:
     virtual const char* onGetName() SK_OVERRIDE {
         return fIsSmall ? "magnifier_small" : "magnifier_large";
     }
 
@@ skipping 40 matching lines @@
                 canvas.drawRect(SkRect::MakeXYWH(0, 8, 8, 8), lightPaint);
                 canvas.drawRect(SkRect::MakeXYWH(8, 8, 8, 8), darkPaint);
                 canvas.restore();
             }
         }
     }
 
     bool fIsSmall;
     bool fInitialized;
     SkBitmap fCheckerboard;
-    typedef SkBenchmark INHERITED;
+    typedef Benchmark INHERITED;
 };
 
 ///////////////////////////////////////////////////////////////////////////////
 
 DEF_BENCH( return new MagnifierBench(true); )
 DEF_BENCH( return new MagnifierBench(false); )