This mainly changes the way both enablers react to the airplane mode. Now
enablers show a toast message instead of disabling the check box directly. This
avoids the inconsistent state introduced by WirelessSettings which controls the
check box using layout dependency.
Related bug: 2053751
Settings.System.AIRPLANE_MODE_TOGGLEABLE_RADIOS is a list of
radios that can be toggled while in airplane mode. This CL
changes BluetoothEnabler to respect this.
It parallels the logic in WifiEnabler, which enables OEMs
to allow Wifi changes when in airplane mode.
Most existing devices don't include "bluetooth" in the
toggleable list, which means bluetooth will continue to be
disabled when in airplane mode for those devices.
Fixes http://b/2297314
Split BluetoothDevice into BluetoothDevice and BluetoothAdapter.
BluetoothAdapter: Represents the local BT adapter. Operations on the local
adapter (start a scan, etc).
BluetoothDevice: Represents a remote BT device. Operations on remote devices
(pair, connect, etc).
In the BroadcastReceiver, pickup the new bluetooth status from the intent instead
of calling back to LocalBluetoothManager. There could be race condition since
LocalBluetoothManager itself gets the same info via the BroadcastReceiver mechanism.
Also cleaned up logs.
