Stop silently accepting unsupported flags in test binaries

tools_webrtc/gtest-parallel-wrapper.py

 #!/usr/bin/env python
 
 # Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.
 #
 # Use of this source code is governed by a BSD-style license
 # that can be found in the LICENSE file in the root of the source
 # tree. An additional intellectual property rights grant can be found
 # in the file PATENTS.  All contributing project authors may
 # be found in the AUTHORS file in the root of the source tree.
 
@@ skipping 63 matching lines @@
 
   parser = argparse.ArgumentParser()
   parser.add_argument('--isolated-script-test-output', type=str, default=None)
 
   # We don't need to implement this flag, and possibly can't, since it's
   # intended for results of Telemetry tests. See
   # https://chromium.googlesource.com/external/github.com/catapult-project/catapult/+/HEAD/dashboard/docs/data-format.md
   parser.add_argument('--isolated-script-test-chartjson-output', type=str,
                       default=None)
 
+  # No-sandbox is a Chromium-specific flag, ignore it.
+  parser.add_argument('--no-sandbox', action='store_true', default=False)
+
   # We have to do this, since --isolated-script-test-output is passed as an
   # argument to the executable by the swarming scripts, and we want to pass it
   # to gtest-parallel instead.
   options, executable_args = parser.parse_known_args(executable_args)
 
   # --isolated-script-test-output is used to upload results to the flakiness
   # dashboard. This translation is made because gtest-parallel expects the flag
   # to be called --dump_json_test_results instead.
   if options.isolated_script_test_output:
     gtest_parallel_args += [
@@ skipping 51 matching lines @@
       logs = [os.path.join(logs_dir, log) for log in os.listdir(logs_dir)]
       log_file = os.path.join(output_dir, '%s-tests.log' % test_status)
       CatFiles(logs, log_file)
       os.rmdir(logs_dir)
 
   return exit_code
 
 
 if __name__ == '__main__':
   sys.exit(main())