Remove const from `const int loops`.

bench/MipMapBench.cpp

 /*
  * Copyright 2015 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "Benchmark.h"
 #include "SkBitmap.h"
 #include "SkMipMap.h"
 
 class MipMapBench: public Benchmark {
     SkBitmap fBitmap;
 
 public:
     MipMapBench() {}
 
 protected:
     bool isSuitableFor(Backend backend) override {
         return kNonRendering_Backend == backend;
     }
 
     const char* onGetName() override { return "mipmap_build"; }
 
     void onDelayedSetup() override {
         fBitmap.allocN32Pixels(1000, 1000, true);
         fBitmap.eraseColor(SK_ColorWHITE);  // so we don't read uninitialized memory
     }
 
-    void onDraw(const int loops, SkCanvas*) override {
+    void onDraw(int loops, SkCanvas*) override {
         for (int i = 0; i < loops; i++) {
             SkMipMap::Build(fBitmap, nullptr)->unref();
         }
     }
 
 private:
     typedef Benchmark INHERITED;
 };
 
 DEF_BENCH( return new MipMapBench; )