Remove const from `const int loops`.

bench/PictureNestingBench.cpp

Index: bench/PictureNestingBench.cpp
diff --git a/bench/PictureNestingBench.cpp b/bench/PictureNestingBench.cpp
index e315fe6dbdb03f7b7a31ab9b123674aa3310ee3f..a968d51db55511223964d320b0798c9a9b615d47 100644
--- a/bench/PictureNestingBench.cpp
+++ b/bench/PictureNestingBench.cpp
@@ -117,7 +117,7 @@ protected:
         return backend == kNonRendering_Backend;
     }
 
-    void onDraw(const int loops, SkCanvas*) override {
+    void onDraw(int loops, SkCanvas*) override {
         SkIPoint canvasSize = onGetSize();
         SkPictureRecorder recorder;
 
@@ -151,7 +151,7 @@ protected:
         fPicture.reset(recorder.endRecording());
     }
 
-    void onDraw(const int loops, SkCanvas* canvas) override {
+    void onDraw(int loops, SkCanvas* canvas) override {
         for (int i = 0; i < loops; i++) {
             canvas->drawPicture(fPicture);
         }