add GetBattorPathFromPhoneSerial to find_usb_devices

devil/devil/utils/find_usb_devices_test.py

Index: devil/devil/utils/find_usb_devices_test.py
diff --git a/devil/devil/utils/find_usb_devices_test.py b/devil/devil/utils/find_usb_devices_test.py
index 2e94dcd2aa6e115f1f8ebc9378c10e80ef009009..77a8aa125b4cb48c6f0865febd956742f08c018b 100755
--- a/devil/devil/utils/find_usb_devices_test.py
+++ b/devil/devil/utils/find_usb_devices_test.py
@@ -32,7 +32,7 @@ import logging
 import unittest
 
 from devil import devil_env
-from devil.utils import find_usb_devices
+from devil.utils import find_usb_devices, usb_hubs
 with devil_env.SysPath(devil_env.PYMOCK_PATH):
   import mock # pylint: disable=import-error
 
@@ -172,11 +172,11 @@ def isTestHub(node):
     return False
   return 'Test Internal HUB' in node.PortToDevice(4).desc
 
-TEST_HUB = find_usb_devices.HubType(isTestHub,
-                                    {1:7,
-                                     2:6,
-                                     3:5,
-                                     4:{1:4, 2:3, 3:2, 4:1}})
+TEST_HUB = usb_hubs.HubType(isTestHub,
+                            {1:7,
+                             2:6,
+                             3:5,
+                             4:{1:4, 2:3, 3:2, 4:1}})
 
 class USBScriptTest(unittest.TestCase):
   def setUp(self):