Revert of [Android] Add a configurable environment for devil/. (RELAND 2)

tools/telemetry/telemetry/internal/platform/android_device.py

 # 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 logging
 import os
 import re
 import subprocess
 
 from telemetry.core import util
 from telemetry.internal.platform import device
@@ skipping 111 matching lines @@
   if len(devices) > 1:
     logging.warn(
         'Multiple devices attached. Please specify one of the following:\n' +
         '\n'.join(['  --device=%s' % d.device_id for d in devices]))
     return None
   return devices[0]
 
 
 def CanDiscoverDevices():
   """Returns true if devices are discoverable via adb."""
-  if os.name != 'posix':
-    return False
-
   adb_path = constants.GetAdbPath()
   if os.path.isabs(adb_path) and not os.path.exists(adb_path):
     return False
   try:
     with open(os.devnull, 'w') as devnull:
       adb_process = subprocess.Popen(
           ['adb', 'devices'], stdout=subprocess.PIPE, stderr=subprocess.PIPE,
           stdin=devnull)
       stdout = adb_process.communicate()[0]
     if re.search(re.escape('????????????\tno permissions'), stdout) != None:
@@ skipping 19 matching lines @@
   """
   if options.android_blacklist_file:
     blacklist = device_blacklist.Blacklist(options.android_blacklist_file)
   else:
     blacklist = None
 
   if not CanDiscoverDevices():
     return []
   else:
     return AndroidDevice.GetAllConnectedDevices(blacklist)