Simplify benchmark internal API.

bench/ImageCacheBench.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 "SkScaledImageCache.h"
 
@@ skipping 20 matching lines @@
             fCache.unlock(fCache.addAndLock(fBM, scale, scale, tmp));
             scale += 1;
         }
     }
 
 protected:
     virtual const char* onGetName() SK_OVERRIDE {
         return "imagecache";
     }
 
-    virtual void onDraw(SkCanvas*) SK_OVERRIDE {
+    virtual void onDraw(const int loops, SkCanvas*) SK_OVERRIDE {
         if (fCache.getBytesUsed() == 0) {
             this->populateCache();
         }
 
         SkBitmap tmp;
         // search for a miss (-1 scale)
-        for (int i = 0; i < this->getLoops(); ++i) {
+        for (int i = 0; i < loops; ++i) {
             (void)fCache.findAndLock(fBM, -1, -1, &tmp);
         }
     }
 
 private:
     typedef SkBenchmark INHERITED;
 };
 
 ///////////////////////////////////////////////////////////////////////////////
 
 DEF_BENCH( return new ImageCacheBench(); )