Remove const from `const int loops`.

bench/ImageFilterDAGBench.cpp

Index: bench/ImageFilterDAGBench.cpp
diff --git a/bench/ImageFilterDAGBench.cpp b/bench/ImageFilterDAGBench.cpp
index 47d59bc782f225373e7eda4fe3a1606cebf49e6a..74e23efb00b03f685449b0c71b348c84aa8d0b26 100644
--- a/bench/ImageFilterDAGBench.cpp
+++ b/bench/ImageFilterDAGBench.cpp
@@ -25,7 +25,7 @@ protected:
         return "image_filter_dag";
     }
 
-    void onDraw(const int loops, SkCanvas* canvas) override {
+    void onDraw(int loops, SkCanvas* canvas) override {
         for (int j = 0; j < loops; j++) {
             SkAutoTUnref<SkImageFilter> blur(SkBlurImageFilter::Create(20.0f, 20.0f));
             SkImageFilter* inputs[kNumInputs];