Remove const from `const int loops`.

bench/MipMapBench.cpp

Index: bench/MipMapBench.cpp
diff --git a/bench/MipMapBench.cpp b/bench/MipMapBench.cpp
index 2fb52bb658a07154265efd6d3c6a81bc09ab140e..137fbe47d5df659dcbba8162c34c8e7a8a26ae5b 100644
--- a/bench/MipMapBench.cpp
+++ b/bench/MipMapBench.cpp
@@ -27,7 +27,7 @@ protected:
         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();
         }