The following revision refers to this bug:
  https://chromium.googlesource.com/chromiumos/third_party/autotest/+/9228a6fdc22d9161770f082028b303f96f6658e5

commit 9228a6fdc22d9161770f082028b303f96f6658e5
Author: Simran Basi <sbasi@google.com>
Date: Tue Mar 29 19:03:37 2016

adb_host: Support running tests over TCP/IP

* Cleaned up the old unused TCP/IP logic.
* Updated the adb_host to enable TCP/IP mode if the serial contains
  a port. When this mode is enabled, test_droid instructs the test
  station to adb connect to the device when resetting the adbd
  connection.

BUG=chromium:598789
TEST=test_droid.py -s 192.168.86.113:5555 brillo_DiskSizeTest &
     test_droid.py -s 92c52320 brillo_DiskSizeTest

Change-Id: Idb4b495c363699e99d84bad1a251341f60aa5e77
Reviewed-on: https://chromium-review.googlesource.com/335683
Commit-Ready: Simran Basi <sbasi@chromium.org>
Tested-by: Simran Basi <sbasi@chromium.org>
Reviewed-by: David Pursell <dpursell@chromium.org>

[modify] https://crrev.com/9228a6fdc22d9161770f082028b303f96f6658e5/server/hosts/adb_host.py