This field was only used by the BT classic flow, which has been removed.
However, much of the chrome.easyUnlockPrivate API still has Bluetooth address-related functionality:
*the Device message still has a bluetoothAddress field
*several API functions still use the field (e.g., chrome.easyUnlockPrivate.seekBluetoothDeviceByAddress())
Since this interfaces with the Chrome App, references to these fields/functions must be removed from the Chrome App before they can be removed from the C++ code.
Comment 1 by jhawkins@chromium.org
, Apr 4 2018