[Android] Convert to DeviceUtils versions of WaitUntilFullyBooted and GetExternalStoragePath.

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
@@ skipping 13 matching lines @@
           signalled.append(p)
         except Exception as e:
           logging.warning('Failed killing %s %s %s', server, p.pid, e)
     for p in signalled:
       try:
         p.wait(1)
       except Exception as e:
         logging.warning('Failed waiting for %s to die. %s', p.pid, e)
 
 
-
 def CleanupLeftoverProcesses():
   """Clean up the test environment, restarting fresh adb and HTTP daemons."""
   _KillWebServers()
   did_restart_host_adb = False
+  # TODO(jbudorick) Implement this with the device parallelizer utility.
   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()
     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()
+    device.WaitUntilFullyBooted()