tools: WPR support for testing speculative_prefetch_predictor.

tools/android/customtabs_benchmark/scripts/customtabs_benchmark.py

 #!/usr/bin/python

[pasko, 2016/12/12 18:07:09]

toplevel note: please start including alexilin@ as a reviewer for the benchmark
code.

This is partly for education of how we are benchmarking, partly for bus factor,
partly to reduce my codereview load.

[Benoit L, 2016/12/14 17:39:39]

Acknowledged.

 #
 # Copyright 2015 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.
 
 """Loops Custom Tabs tests and outputs the results into a CSV file."""
 
 import collections
 import contextlib
 import logging
@@ skipping 162 matching lines @@
     once: (bool) Run only once.
     should_stop: (threading.Event or None) When the event is set, stop looping.
   """
   with SetupWpr(device, wpr_archive_path, wpr_record, network_condition,
                 wpr_log_path) as wpr_attributes:
     to_stdout = output_filename == '-'
     out = sys.stdout if to_stdout else open(output_filename, 'a')
     try:
       while should_stop is None or not should_stop.is_set():
         config = configs[random.randint(0, len(configs) - 1)]
-        chrome_args = _CHROME_ARGS + wpr_attributes.chrome_args
+        chrome_args = CHROME_ARGS + wpr_attributes.chrome_args
         if config['speculation_mode'] == 'no_state_prefetch':
           chrome_args.append('--prerender=prefetch')
         result = RunOnce(device, config['url'], config['warmup'],
                          config['speculation_mode'],
                          config['delay_to_may_launch_url'],
                          config['delay_to_launch_url'], config['cold'],
                          chrome_args, reset_chrome_state=True)
         if result is not None:
           out.write(result + '\n')
           out.flush()
@@ skipping 118 matching lines @@
       'delay_to_launch_url': options.delay_to_launch_url,
       'cold': options.cold,
   }
   LoopOnDevice(device, [config], options.output_file, options.wpr_archive,
                options.record, options.network_condition, options.wpr_log,
                once=options.once)
 
 
 if __name__ == '__main__':
   main()