[Android] Extract device blacklisting into its own module.

build/android/buildbot/bb_device_status_check.py

Index: build/android/buildbot/bb_device_status_check.py
diff --git a/build/android/buildbot/bb_device_status_check.py b/build/android/buildbot/bb_device_status_check.py
index f0579624a89ede372d94e8607f1b02dfe68f9446..0291e8de1bdaab34851efe7aa9996faf9efd4d34 100755
--- a/build/android/buildbot/bb_device_status_check.py
+++ b/build/android/buildbot/bb_device_status_check.py
@@ -29,7 +29,7 @@ sys.path.append(os.path.join(os.path.dirname(__file__), '..'))
 from pylib import android_commands
 from pylib import constants
 from pylib.cmd_helper import GetCmdOutput
-
+from pylib.device import device_blacklist
 
 def DeviceInfo(serial, options):
   """Gathers info on a device via various adb calls.
@@ -293,8 +293,8 @@ def main():
   if args:
     parser.error('Unknown options %s' % args)
 
-  # Remove the last builds "bad devices" before checking device statuses.
-  android_commands.ResetBadDevices()
+  # Remove the last build's "bad devices" before checking device statuses.
+  device_blacklist.ResetBlacklist()
 
   if options.restart_usb:
     expected_devices = GetLastDevices(os.path.abspath(options.out_dir))