Android: re-add perf test summary.

build/android/test_runner.py

 #!/usr/bin/env python
 #
 # Copyright 2013 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.
 
 """Runs all types of tests from one unified interface."""
 
 import collections
 import logging
@@ skipping 631 matching lines @@
       num_retries=options.num_retries)
 
   report_results.LogFull(
       results=results,
       test_type='Perf',
       test_package='Perf')
 
   if perf_options.single_step:
     return perf_test_runner.PrintTestOutput('single_step')
 
+  perf_test_runner.PrintSummary(tests)
+
   # Always return 0 on the sharding stage. Individual tests exit_code
   # will be returned on the print_step stage.
   return 0
 
 
 def _GetAttachedDevices(test_device=None):
   """Get all attached devices.
 
   Args:
     test_device: Name of a specific device to use.
@@ skipping 136 matching lines @@
 
 def main(argv):
   signal.signal(signal.SIGUSR1, DumpThreadStacks)
   option_parser = command_option_parser.CommandOptionParser(
       commands_dict=VALID_COMMANDS)
   return command_option_parser.ParseAndExecute(option_parser)
 
 
 if __name__ == '__main__':
   sys.exit(main(sys.argv))