Fix format of nanobench result

bench/nanobench.cpp

 /*
  * Copyright 2014 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include <ctype.h>
 
 #include "Benchmark.h"
@@ skipping 569 matching lines @@
 
     SkAutoTMalloc<double> samples(FLAGS_samples);
 
     if (kAutoTuneLoops != FLAGS_loops) {
         SkDebugf("Fixed number of loops; times would only be misleading so we won't print them.\n");
     } else if (FLAGS_verbose) {
         // No header.
     } else if (FLAGS_quiet) {
         SkDebugf("median\tbench\tconfig\n");
     } else {
-        SkDebugf("maxrss\tloops\tmin\tmedian\tmean\tmax\tstddev\tsamples\tconfig\tbench\n");
+        SkDebugf("maxrss\tloops\tmin\tmedian\tmean\tmax\tstddev\t%-*s\tconfig\tbench\n",
+                 FLAGS_samples, "samples");
     }
 
     SkTDArray<Config> configs;
     create_configs(&configs);
 
     BenchmarkStream benchStream;
     while (Benchmark* b = benchStream.next()) {
         SkAutoTDelete<Benchmark> bench(b);
         if (SkCommandLineFlags::ShouldSkip(FLAGS_match, bench->getName())) {
             continue;
@@ skipping 89 matching lines @@
 
     return 0;
 }
 
 #if !defined SK_BUILD_FOR_IOS
 int main(int argc, char** argv) {
     SkCommandLineFlags::Parse(argc, argv);
     return nanobench_main();
 }
 #endif