[Android] Convert to DeviceUtils versions of IsOnline, HasRoot, and EnableRoot.

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 pylib import android_commands
+from pylib.device import device_errors
 from pylib.device 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)
@@ skipping 12 matching lines @@
   """Clean up the test environment, restarting fresh adb and HTTP daemons."""
   _KillWebServers()
   did_restart_host_adb = False
   for device_serial in android_commands.GetAttachedDevices():
     device = device_utils.DeviceUtils(device_serial)
     # Make sure we restart the host adb server only once.
     if not did_restart_host_adb:
       device_utils.RestartServer()
       did_restart_host_adb = True
     device.old_interface.RestartAdbdOnDevice()
-    device.old_interface.EnableAdbRoot()
+    try:
+      device.EnableRoot()
+    except device_errors.CommandFailedError as e:
+      # TODO(jbudorick) Handle this exception appropriately after interface
+      #                 conversions are finished.
+      logging.error(str(e))
     device.old_interface.WaitForDevicePm()