LocalBluetoothAdapter only has a few APIs that is not supported
by BluetoothAdapter, and lots of LocalBluetoothAdapter function
pass parameter to BluetoothAdapter directly.
Do the refactor in Settings, use BluetoothAdapter instead of
LocalBluetoothAdapter.
Bug: 111769754
Test: make -j42 RunSettingsRoboTests
Change-Id: I88e5a8377b5d1106c7679e6a8c3fd1ca1a80ea6f