Use local dashboard for test uploads in perf_data_uploader.py

mojo/tools/mopy/perf_data_uploader.py

 #!/usr/bin/env python
 # Copyright 2014 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.
 
-"""A tool that uploads data to the performance dashboard."""
+"""A tool that uploads data to the performance dashboard.
+
+By default the script uploads to a local testing dashboard assumed to be running
+on the host. To run such server, check out Catapult and follow instructions at
+https://github.com/catapult-project/catapult/blob/master/dashboard/README.md .
+"""
 
 import argparse
 import httplib
 import json
 import pprint
 import re
 import sys
 import urllib
 import urllib2
 
 # TODO(yzshen): The following are missing currently:
 #     (1) CL range on the dashboard;
 #     (2) improvement direction on the dashboard;
 #     (3) a link from the build step pointing to the dashboard page.
 
 
 _PERF_LINE_FORMAT = r"""^\s*([^\s/]+)  # chart name
                         (/([^\s/]+))?  # trace name (optional, separated with
                                        # the chart name by a '/')
                         \s+(\S+)       # value
                         \s+(\S+)       # units
                         \s*$"""
 
 _PRODUCTION_SERVER = "https://chromeperf.appspot.com"
-_TESTING_SERVER = "https://chrome-perf.googleplex.com"
+_TESTING_SERVER = "http://127.0.0.1:8080"
 
 
 def UploadPerfData(master_name, perf_id, test_name, builder_name, build_number,
                    revision, perf_data, point_id, dry_run=False,
                    testing_dashboard=True):
   """Uploads perf data.
 
   Args:
     Please see the help for command-line args.
 
@@ skipping 149 matching lines @@
 
   result = UploadPerfData(args.master_name, args.perf_id, args.test_name,
                           args.builder_name, args.build_number, args.revision,
                           args.perf_data, args.point_id, args.dry_run,
                           args.testing_dashboard)
   return 0 if result else 1
 
 
 if __name__ == '__main__':
   sys.exit(main())