[Android][telemetry] Update pylib imports for modules that moved into devil.

build/android/pylib/perf/thermal_throttle.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
-from pylib.device import device_utils
+
+from devil.android import device_utils
 
 
 class OmapThrottlingDetector(object):
   """Class to detect and track thermal throttling on an OMAP 4."""
   OMAP_TEMP_FILE = ('/sys/devices/platform/omap/omap_temp_sensor.0/'
                     'temperature')
 
   @staticmethod
   def IsSupported(device):
     return device.FileExists(OmapThrottlingDetector.OMAP_TEMP_FILE)
@@ skipping 107 matching lines @@
       # Print temperature of battery, to give a system temperature
       dumpsys_log = self._device.RunShellCommand('dumpsys battery')
       for line in dumpsys_log:
         if 'temperature' in line:
           btemp = float([s for s in line.split() if s.isdigit()][0]) / 10.0
           logging.debug(u'Current battery temperature of %s = %3.1f%sC',
                         serial_number, btemp, degree_symbol)
 
     return has_been_throttled