small tidy of benchmarkstream

tools/VisualBench/VisualBenchmarkStream.h

Index: tools/VisualBench/VisualBenchmarkStream.h
diff --git a/tools/VisualBench/VisualBenchmarkStream.h b/tools/VisualBench/VisualBenchmarkStream.h
index 9e5d4590cb80ee8a4f4c9b114a3819ddf9bd0bd3..89ca632821490032d6904d30321c6077680b5a6d 100644
--- a/tools/VisualBench/VisualBenchmarkStream.h
+++ b/tools/VisualBench/VisualBenchmarkStream.h
@@ -23,6 +23,7 @@ public:
     static bool ReadPicture(const char* path, SkAutoTUnref<SkPicture>* pic);
 
     Benchmark* next();
+    Benchmark* current() { return fBenchmark.get(); }
 
 private:
     Benchmark* innerNext();
@@ -30,6 +31,7 @@ private:
     const BenchRegistry* fBenches;
     const skiagm::GMRegistry* fGMs;
     SkTArray<SkString> fSKPs;
+    SkAutoTUnref<Benchmark> fBenchmark;
 
     const char* fSourceType;  // What we're benching: bench, GM, SKP, ...
     const char* fBenchType;   // How we bench it: micro, playback, ...