Add samplingTime mode to nanobench

tools/VisualBench.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 "VisualBench.h"
 
@@ skipping 134 matching lines @@
 void VisualBench::printStats() {
     const SkTArray<double>& measurements = fRecords[fCurrentPictureIdx].fMeasurements;
     SkString shortName = SkOSPath::Basename(fRecords[fCurrentPictureIdx].fFilename.c_str());
     if (FLAGS_verbose) {
         for (int i = 0; i < measurements.count(); i++) {
             SkDebugf("%s  ", HUMANIZE(measurements[i]));
         }
         SkDebugf("%s\n", shortName.c_str());
     } else {
         SkASSERT(measurements.count());
-        Stats stats(measurements.begin(), measurements.count());
+        Stats stats(measurements);
         const double stdDevPercent = 100 * sqrt(stats.var) / stats.mean;
         SkDebugf("%4d/%-4dMB\t%d\t%d\t%s\t%s\t%s\t%s\t%.0f%%\t%s\n",
                  sk_tools::getCurrResidentSetSizeMB(),
                  sk_tools::getMaxResidentSetSizeMB(),
                  fLoops,
                  fFlushes,
                  HUMANIZE(stats.min),
                  HUMANIZE(stats.median),
                  HUMANIZE(stats.mean),
                  HUMANIZE(stats.max),
@@ skipping 127 matching lines @@
 
 void application_term() {
     SkEvent::Term();
     SkGraphics::Term();
 }
 
 SkOSWindow* create_sk_window(void* hwnd, int argc, char** argv) {
     return new VisualBench(hwnd, argc, argv);
 }