[devil] Raise DeviceUnreachableError on device not found

devil/devil/android/tools/provision_devices.py

 #!/usr/bin/env python
 #
 # Copyright (c) 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.
 
 """Provisions Android devices with settings required for bots.
 
 Usage:
   ./provision_devices.py [-d <device serial number>]
@@ skipping 152 matching lines @@
       if step.reboot:
         device.Reboot(False, retries=0)
         device.adb.WaitForDevice()
 
   except device_errors.CommandTimeoutError:
     logger.exception('Timed out waiting for device %s. Adding to blacklist.',
                      str(device))
     if blacklist:
       blacklist.Extend([str(device)], reason='provision_timeout')
 
-  except device_errors.CommandFailedError:
+  except (device_errors.CommandFailedError,
+          device_errors.DeviceUnreachableError):
     logger.exception('Failed to provision device %s. Adding to blacklist.',
                      str(device))
     if blacklist:
       blacklist.Extend([str(device)], reason='provision_failure')
 
 
 def Wipe(device, adb_key_files=None):
   if (device.IsUserBuild() or
       device.build_version_sdk >= version_codes.MARSHMALLOW):
     WipeChromeData(device)
@@ skipping 445 matching lines @@
         remove_system_webview=args.remove_system_webview,
         system_app_remove_list=args.system_app_remove_list,
         wipe=not args.skip_wipe and not args.emulators)
   except (device_errors.DeviceUnreachableError, device_errors.NoDevicesError):
     logging.exception('Unable to provision local devices.')
     return exit_codes.INFRA
 
 
 if __name__ == '__main__':
   sys.exit(main(sys.argv[1:]))