[Android] Switch to DeviceUtils versions of GetMemoryUsageForPid and __str__.

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 import android_commands
 from pylib.device import device_utils
 
 
 class OmapThrottlingDetector(object):
@@ skipping 81 matching lines @@
 
   def IsThrottled(self):
     """True if currently throttled."""
     self._ReadLog()
     return self._throttled
 
   def _ReadLog(self):
     if not self._detector:
       return False
     has_been_throttled = False
-    serial_number = self._device.old_interface.GetDevice()
+    serial_number = str(self._device)
     log = self._device.RunShellCommand('dmesg -c')
     degree_symbol = unichr(0x00B0)
     for line in log:
       if self._detector.BecameThrottled(line):
         if not self._throttled:
           logging.warning('>>> Device %s thermally throttled', serial_number)
         self._throttled = True
         has_been_throttled = True
       elif self._detector.BecameUnthrottled(line):
         if self._throttled:
@@ skipping 15 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