Refactor site_power_status, power_strip modules into client/cros.

client/site_tests/power_BatteryCharge/power_BatteryCharge.py

 # Copyright (c) 2010 The Chromium OS 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, time
 from autotest_lib.client.bin import test
-from autotest_lib.client.common_lib import error, site_power_status
+from autotest_lib.client.common_lib import error
+from autotest_lib.client.cros import power_status
 
 
 class power_BatteryCharge(test.test):
     version = 1
 
     def initialize(self):
-        self.status = site_power_status.get_status()
+        self.status = power_status.get_status()
 
         if not self.on_ac():
             raise error.TestNAError(
                   'This test needs to be run with the AC power online')
 
 
     def run_once(self, max_run_time=180, percent_charge_to_add=1,
                  percent_initial_charge_max=None,
                  percent_target_charge=None):
         """
@@ skipping 62 matching lines @@
         keyvals['percent_initial_charge'] = self.initial_charge * 100 / \
                                             keyvals['ah_charge_full_design']
         keyvals['percent_final_charge'] = keyvals['ah_final_charge'] * 100 / \
                                           keyvals['ah_charge_full_design']
 
         self.write_perf_keyval(keyvals)
 
 
     def on_ac(self):
         return self.status.linepower[0].online