old_contents: #!/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.
  
  import argparse
  import imp
  import importlib
  import os
  import sys
  
  try:
    imp.find_module('mopy')
  except ImportError:
    sys.path.append(os.path.abspath(os.path.join(
        __file__, os.pardir, os.pardir, 'mojo', 'tools')))
  from mopy.paths import Paths
  
  
  class BenchmarkRunner(object):
    def __init__(self, args):
      self._args = args
      self._benchmark_dir = os.path.dirname(os.path.realpath(__file__))
      if args.release:
        build_directory = os.path.join('out', 'Release')
      else:
        build_directory = os.path.join('out', 'Debug')
      self._paths = Paths(build_directory)
  
    def _list_tests(self):
      for name in os.listdir(self._benchmark_dir):
        path = os.path.join(self._benchmark_dir, name)
        if os.path.isdir(path):
          yield name
  
    def _run_test(self, test_name):
      print "Running %s ..." % test_name
      run_script_path = os.path.join(self._benchmark_dir, test_name, 'run.py')
      if os.path.isfile(run_script_path):
        run_module = '.'.join([test_name, 'run'])
        importlib.import_module(run_module)
        result = sys.modules[run_module].run(self._args, self._paths)
  
        #TODO(yzshen): (1) consider using more structured result;
        #              (2) upload the result to server.
        print result
  
    def run(self):
      for test in self._list_tests():
        self._run_test(test)
  
  
  def main():
    parser = argparse.ArgumentParser(
        description='Mojo performance benchmark runner')
  
    debug_group = parser.add_mutually_exclusive_group()
    debug_group.add_argument('--release',
                             help='test against release build (default)',
                             default=True, action='store_true')
    debug_group.add_argument('--debug', help='test against debug build',
                             default=False, dest='release', action='store_false')
  
    args = parser.parse_args()
  
    BenchmarkRunner(args).run()
  
  
  if __name__ == '__main__':
    sys.exit(main())
  
new_contents: #!/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.
  
  import argparse
  import imp
  import importlib
  import os
  import sys
  
  try:
    imp.find_module('mopy')
  except ImportError:
    sys.path.append(os.path.abspath(os.path.join(
        __file__, os.pardir, os.pardir, 'mojo', 'tools')))
  from mopy.paths import Paths
  
  
  class BenchmarkRunner(object):
    def __init__(self, args):
      self._args = args
      self._benchmark_dir = os.path.dirname(os.path.realpath(__file__))
      if args.release:
        build_directory = os.path.join('out', 'Release')
      else:
        build_directory = os.path.join('out', 'Debug')
      self._paths = Paths(build_dir=build_directory)
  
    def _list_tests(self):
      for name in os.listdir(self._benchmark_dir):
        path = os.path.join(self._benchmark_dir, name)
        if os.path.isdir(path):
          yield name
  
    def _run_test(self, test_name):
      print "Running %s ..." % test_name
      run_script_path = os.path.join(self._benchmark_dir, test_name, 'run.py')
      if os.path.isfile(run_script_path):
        run_module = '.'.join([test_name, 'run'])
        importlib.import_module(run_module)
        result = sys.modules[run_module].run(self._args, self._paths)
  
        #TODO(yzshen): (1) consider using more structured result;
        #              (2) upload the result to server.
        print result
  
    def run(self):
      for test in self._list_tests():
        self._run_test(test)
  
  
  def main():
    parser = argparse.ArgumentParser(
        description='Mojo performance benchmark runner')
  
    debug_group = parser.add_mutually_exclusive_group()
    debug_group.add_argument('--release',
                             help='test against release build (default)',
                             default=True, action='store_true')
    debug_group.add_argument('--debug', help='test against debug build',
                             default=False, dest='release', action='store_false')
  
    args = parser.parse_args()
  
    BenchmarkRunner(args).run()
  
  
  if __name__ == '__main__':
    sys.exit(main())
  
subject: Fix benchmark_runner.py.