move visual bench interactive module to timing state machine

tools/VisualBench/TimingStateMachine.h

Index: tools/VisualBench/TimingStateMachine.h
diff --git a/tools/VisualBench/TimingStateMachine.h b/tools/VisualBench/TimingStateMachine.h
index 69ea24337fb752894d32da698946285da862179c..5ec1313b1f65bf98f5998f487ad3240ed27493ea 100644
--- a/tools/VisualBench/TimingStateMachine.h
+++ b/tools/VisualBench/TimingStateMachine.h
@@ -39,6 +39,12 @@ public:
     ParentEvents nextFrame(SkCanvas* canvas, Benchmark* benchmark);
 
     /*
+     * Before taking another sample, the owner can choose to prewarm or not
+     */
+    void nextSampleWithPrewarm();
+    void nextSample();
+
+    /*
      * The caller should call this when they are ready to move to the next benchmark.  The caller
      * must call this with the *last* benchmark so post draw hooks can be invoked
      */