Revert of [Android] Remove more uses of android_commands from build/android/pylib.

build/android/pylib/device/device_utils.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.
 
 """Provides a variety of device interactions based on adb.
 
 Eventually, this will be based on adb_wrapper.
 """
 # pylint: disable=unused-argument
 
@@ skipping 157 matching lines @@
     else:
       raise ValueError('Unsupported device value: %r' % device)
     self._commands_installed = None
     self._default_timeout = default_timeout
     self._default_retries = default_retries
     self._cache = {}
     self._client_caches = {}
     assert hasattr(self, decorators.DEFAULT_TIMEOUT_ATTR)
     assert hasattr(self, decorators.DEFAULT_RETRIES_ATTR)
 
-  def __eq__(self, other):
-    """Checks whether |other| refers to the same device as |self|.
-
-    Args:
-      other: The object to compare to. This can be a basestring, an instance
-        of adb_wrapper.AdbWrapper, or an instance of DeviceUtils.
-    Returns:
-      Whether |other| refers to the same device as |self|.
-    """
-    return self.adb.GetDeviceSerial() == str(other)
-
-  def __lt__(self, other):
-    """Compares two instances of DeviceUtils.
-
-    This merely compares their serial numbers.
-
-    Args:
-      other: The instance of DeviceUtils to compare to.
-    Returns:
-      Whether |self| is less than |other|.
-    """
-    return self.adb.GetDeviceSerial() < other.adb.GetDeviceSerial()
-
   def __str__(self):
     """Returns the device serial."""
     return self.adb.GetDeviceSerial()
 
   @decorators.WithTimeoutAndRetriesFromInstance()
   def IsOnline(self, timeout=None, retries=None):
     """Checks whether the device is online.
 
     Args:
       timeout: timeout in seconds
@@ skipping 1396 matching lines @@
     blacklist = device_blacklist.ReadBlacklist()
     def blacklisted(adb):
       if adb.GetDeviceSerial() in blacklist:
         logging.warning('Device %s is blacklisted.', adb.GetDeviceSerial())
         return True
       return False
 
     return [cls(adb) for adb in adb_wrapper.AdbWrapper.Devices()
             if not blacklisted(adb)]