tree 54146ee081549c5b459812f8df91103140bb93fa
parent 363c529dc6ec232b9c12c478ee33238ed21d5be5
author Paul Stewart <pstew@google.com> 1477600145 -0700
committer Paul Stewart <pstew@google.com> 1477600450 -0700

Don't display an invalid Wi-Fi MAC address

Only display the WifiInfo MAC address if it is a valid address.
Otherwise, display "Unavailable".  The underlying WifiInfo class
now has a default value, and a method that can be used to test
whether or not the contained address is valid.  This change uses
this test and avoids having the confusing default address displayed.

Bug: 32478606
Test: Manual: Turn off WiFi and reboot -- make sure "Unavailable"
      is displayed as the Wi-Fi MAC Address as opposed to "02:00:00:00:00:00"

Change-Id: I912804eb65735375e0ca3c4618a6399543f33b57