Add visualbench option to not reset between samples

tools/VisualBench/VisualInteractiveModule.cpp

 /*
  * Copyright 2015 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "VisualInteractiveModule.h"
 
 #include "SkCanvas.h"
 #include "SkCommandLineFlags.h"
 #include "SkForceLinking.h"
 #include "SkImageDecoder.h"
 
 __SK_FORCE_IMAGE_DECODER_LINKING;
 
 VisualInteractiveModule::VisualInteractiveModule(VisualBench* owner)
-    : INHERITED(owner, false)

[Chris Dalton, 2015/11/13 07:45:01]

This is the only change in default behavior.

Since the default is to reset between samples, we are going to start performing
a pre-warm between samples in interactive mode except for when --reset is set to
false.

I think this will be a positive change though, since a pre-warm is actually
necessary after a reset.

+    : INHERITED(owner)
     , fCurrentMeasurement(0)
     , fAdvance(false) {
     memset(fMeasurements, 0, sizeof(fMeasurements));
 }
 
 void VisualInteractiveModule::renderFrame(SkCanvas* canvas, Benchmark* benchmark, int loops) {
     benchmark->draw(loops, canvas);
     this->drawStats(canvas);
     canvas->flush();
 }
@@ skipping 49 matching lines @@
     return false;
 }
 
 bool VisualInteractiveModule::onHandleChar(SkUnichar c) {
     if (' ' == c) {
         fAdvance = true;
     }
 
     return true;
 }