Fix visual bench memory leak

tools/VisualBench/VisualBench.cpp

Index: tools/VisualBench/VisualBench.cpp
diff --git a/tools/VisualBench/VisualBench.cpp b/tools/VisualBench/VisualBench.cpp
index e97db8a308901b0223e948c9a9f29a03738aaaf7..d8713e743cc4b4fdfa29320697e51c7a5a332b3b 100644
--- a/tools/VisualBench/VisualBench.cpp
+++ b/tools/VisualBench/VisualBench.cpp
@@ -163,10 +163,7 @@ bool VisualBench::advanceRecordIfNecessary(SkCanvas* canvas) {
         return true;
     }
 
-    while ((fBenchmark = fBenchmarkStream->next()) &&
-           (SkCommandLineFlags::ShouldSkip(FLAGS_match, fBenchmark->getUniqueName()) ||
-            !fBenchmark->isSuitableFor(Benchmark::kGPU_Backend))) {}
-
+    fBenchmark.reset(fBenchmarkStream->next());
     if (!fBenchmark) {
         return false;
     }
@@ -238,7 +235,7 @@ void VisualBench::draw(SkCanvas* canvas) {
                     fState = kPreWarmLoops_State;
                     this->printStats();
                     fBenchmark->perCanvasPostDraw(canvas);
-                    fBenchmark = NULL;
+                    fBenchmark.reset(NULL);
                     fCurrentSample = 0;
                     fFlushes = 1;
                     fLoops = 1;