[Android] Implement perf tests to platform mode.

build/android/pylib/local/device/local_device_environment.py

 # Copyright 2014 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 datetime
 import logging
 import os
 import shutil
 import tempfile
 import threading
@@ skipping 69 matching lines @@
         logcat_file = os.path.join(
             self._logcat_output_dir,
             '%s_%s' % (d.adb.GetDeviceSerial(),
                        datetime.datetime.utcnow().strftime('%Y%m%dT%H%M%S')))
         monitor = logcat_monitor.LogcatMonitor(
             d.adb, clear=True, output_file=logcat_file)
         self._logcat_monitors.append(monitor)
         monitor.Start()
 
   @property
+  def blacklist(self):
+    return self._blacklist
+
+  @property
   def concurrent_adb(self):
     return self._concurrent_adb
 
   @property
   def devices(self):
     if not self._devices:
       raise device_errors.NoDevicesError()
     return self._devices
 
   @property
@@ skipping 31 matching lines @@
           [m.output_file for m in self._logcat_monitors])
       shutil.rmtree(self._logcat_output_dir)
 
   def BlacklistDevice(self, device, reason='local_device_failure'):
     device_serial = device.adb.GetDeviceSerial()
     if self._blacklist:
       self._blacklist.Extend([device_serial], reason=reason)
     with self._devices_lock:
       self._devices = [d for d in self._devices if str(d) != device_serial]