stop scaling loops and improve warmup bench

tools/VisualBench/VisualLightweightBenchModule.h

 /*
  * Copyright 2015 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  *
  */
 
 #ifndef VisualLightweightBenchModule_DEFINED
 #define VisualLightweightBenchModule_DEFINED
@@ skipping 53 matching lines @@
     };
     void setTitle();
     bool setupBackend();
     void setupRenderTarget();
     void printStats();
     bool advanceRecordIfNecessary(SkCanvas*);
     inline void renderFrame(SkCanvas*);
     inline void nextState(State);
     void perCanvasPreDraw(SkCanvas*, State);
     void preWarm(State nextState);
-    void scaleLoops(double elapsedMs);
     inline void tuneLoops();
     inline void timing(SkCanvas*);
     inline double elapsed();
     void resetTimingState();
     void postDraw(SkCanvas*);
     void recordMeasurement();
     void warmup(SkCanvas* canvas);
 
     struct Record {
         SkTArray<double> fMeasurements;
     };
 
     int fCurrentSample;
     int fCurrentFrame;
     int fLoops;
     SkTArray<Record> fRecords;
     WallTimer fTimer;
     State fState;
     SkAutoTDelete<VisualBenchmarkStream> fBenchmarkStream;
     SkAutoTUnref<Benchmark> fBenchmark;
 
     // support framework
     SkAutoTUnref<VisualBench> fOwner;
     SkAutoTDelete<ResultsWriter> fResults;
 
     typedef VisualModule INHERITED;
 };
 
 #endif