[Android] Add --blacklist-file as a command-line option.

build/android/pylib/utils/test_environment.py

Index: build/android/pylib/utils/test_environment.py
diff --git a/build/android/pylib/utils/test_environment.py b/build/android/pylib/utils/test_environment.py
index f55a4acc100997aeb1bc5b4e7ee69caca73056d8..3b31d4675b4c78619490398d5034cfb3b57ad0db 100644
--- a/build/android/pylib/utils/test_environment.py
+++ b/build/android/pylib/utils/test_environment.py
@@ -30,8 +30,12 @@ def _KillWebServers():
         logging.warning('Failed waiting for %s to die. %s', p.pid, e)
 
 
-def CleanupLeftoverProcesses():
-  """Clean up the test environment, restarting fresh adb and HTTP daemons."""
+def CleanupLeftoverProcesses(devices):
+  """Clean up the test environment, restarting fresh adb and HTTP daemons.
+
+  Args:
+    devices: The devices to clean.
+  """
   _KillWebServers()
   device_utils.RestartServer()
 
@@ -43,5 +47,5 @@ def CleanupLeftoverProcesses():
       logging.error(str(e))
     d.WaitUntilFullyBooted()
 
-  device_utils.DeviceUtils.parallel().pMap(cleanup_device)
+  device_utils.DeviceUtils.parallel(devices).pMap(cleanup_device)