Add loopSKP flag to nanobench

bench/SKPAnimationBench.h

Index: bench/SKPAnimationBench.h
diff --git a/bench/SKPAnimationBench.h b/bench/SKPAnimationBench.h
index f6e9fa4ede2fd7fb1de1a2beefa5011d90bad167..65708f763943c2dcb83fb2acb2289912be3f21fa 100644
--- a/bench/SKPAnimationBench.h
+++ b/bench/SKPAnimationBench.h
@@ -17,7 +17,7 @@
 class SKPAnimationBench : public SKPBench {
 public:
     SKPAnimationBench(const char* name, const SkPicture*, const SkIRect& devClip,
-                      SkMatrix viewMatrix, int steps);
+                      SkMatrix viewMatrix, int steps, bool doLooping);
 
 protected:
     const char* onGetName() override;