Refactoring: get rid of the SkBenchmark void* parameter.

bench/MutexBench.cpp

 /*
  * Copyright 2011 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 "SkThread.h"
 
 class MutexBench : public SkBenchmark {
 public:
-    MutexBench(void* param) : INHERITED(param) {
+    MutexBench()  {
         fIsRendering = false;
     }
 protected:
     virtual const char* onGetName() {
         return "mutex";
     }
 
     virtual void onDraw(SkCanvas*) {
         SK_DECLARE_STATIC_MUTEX(mu);
         for (int i = 0; i < this->getLoops(); i++) {
             mu.acquire();
             mu.release();
         }
     }
 
 private:
     typedef SkBenchmark INHERITED;
 };
 
 ///////////////////////////////////////////////////////////////////////////////
 
-static SkBenchmark* Fact(void* p) { return new MutexBench(p); }
-
-static BenchRegistry gReg01(Fact);
+DEF_BENCH( return new MutexBench(); )