[Android] Get rid of old perf test runner.

build/android/pylib/utils/test_environment.py

-# 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.
-
-import logging
-import psutil
-import signal
-
-from devil.android import device_errors
-from devil.android import device_utils
-
-
-def _KillWebServers():
-  for s in [signal.SIGTERM, signal.SIGINT, signal.SIGQUIT, signal.SIGKILL]:
-    signalled = []
-    for server in ['lighttpd', 'webpagereplay']:
-      for p in psutil.process_iter():
-        try:
-          if not server in ' '.join(p.cmdline):
-            continue
-          logging.info('Killing %s %s %s', s, server, p.pid)
-          p.send_signal(s)
-          signalled.append(p)
-        except Exception: # pylint: disable=broad-except
-          logging.exception('Failed killing %s %s', server, p.pid)
-    for p in signalled:
-      try:
-        p.wait(1)
-      except Exception: # pylint: disable=broad-except
-        logging.exception('Failed waiting for %s to die.', p.pid)
-
-
-def CleanupLeftoverProcesses(devices):
-  """Clean up the test environment, restarting fresh adb and HTTP daemons.
-
-  Args:
-    devices: The devices to clean.
-  """
-  _KillWebServers()
-  device_utils.RestartServer()
-
-  def cleanup_device(d):
-    try:
-      d.WaitUntilFullyBooted()
-      d.RestartAdbd()
-      d.EnableRoot()
-      d.WaitUntilFullyBooted()
-    except (device_errors.CommandFailedError,
-            device_errors.CommandTimeoutError):
-      logging.exception('Failed to clean up device. Attempting to continue.')
-
-  device_utils.DeviceUtils.parallel(devices).pMap(cleanup_device)
-