Refactor site_power_status, power_strip modules into client/cros.

client/cros/power_status.py

 import glob, logging, os, re, time
-from autotest_lib.client.bin import utils as bin_utils
-from autotest_lib.client.common_lib import error, utils
+from autotest_lib.client.bin import utils
+from autotest_lib.client.common_lib import error
 
 
 class DevStat(object):
     """
     Device power status. This class implements generic status initialization
     and parsing routines.
     """
 
     def __init__(self, fields, path=None):
         self.fields = fields
@@ skipping 242 matching lines @@
 class CPUIdleStats(object):
     """
     CPU Idle statistics
     """
     # TODO (snanda): Handle changes in number of c-states due to events such
     # as ac <-> battery transitions.
     # TODO (snanda): Handle non-S0 states. Time spent in suspend states is
     # currently not factored out.
 
     def __init__(self):
-        self._num_cpus = bin_utils.count_cpus()
+        self._num_cpus = utils.count_cpus()
         self._time = time.time()
         self._stats = self._read_stats()
 
 
     def refresh(self):
         """
         This method returns the percentage time spent in each of the CPU
         idle states. The stats returned are from whichever is the later of:
         a) time this class was instantiated, or
         b) time when refresh was last called
@@ skipping 112 matching lines @@
 
             active = int(utils.read_file(active_duration_path))
             connected = int(utils.read_file(connected_duration_path))
             logging.debug('device %s active for %.2f%%',
                           path, active * 100.0 / connected)
 
             total_active += active
             total_connected += connected
 
         return total_active, total_connected