Add CsvOutputFormatter to Telemetry.

tracing/bin/histograms2csv

 #!/usr/bin/env python
 # Copyright 2016 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 import argparse
 import codecs
 import json
 import sys
 import os
 
 tracing_path = os.path.abspath(os.path.join(
   os.path.dirname(os.path.realpath(__file__)), '..'))
 sys.path.append(tracing_path)
 import tracing_project
 tracing_project.UpdateSysPathIfNeeded()
-import vinn
 
-
-_HISTOGRAMS_TO_CSV_CMD_LINE = os.path.join(
-    tracing_path, 'tracing', 'value', 'histograms_to_csv_cmdline.html')
+from tracing.value import histograms_to_csv
 
 
 def main():
   parser = argparse.ArgumentParser(
       description='Upgrade a results2 instance or add a new HistogramSet.',
       add_help=False)
   parser.add_argument('json_path',
                       help='HistogramSet JSON file path (input).')
   parser.add_argument('csv_path',
                       help='CSV file path (output).')
   parser.add_argument('-h', '--help', action='help',
                       help='Show this help message and exit.')
   args = parser.parse_args()
-  result = vinn.RunFile(
-      _HISTOGRAMS_TO_CSV_CMD_LINE,
-      source_paths=list(tracing_project.TracingProject().source_paths),
-      js_args=[os.path.abspath(args.json_path)])
+  result = histograms_to_csv.HistogramsToCsv(args.json_path)
   if result.returncode != 0:
     sys.stderr.write(result.stdout)
   else:
     file(args.csv_path, 'w').write(result.stdout)
   return result.returncode
 
 if __name__ == '__main__':
   sys.exit(main())