Merge "Add @RequiresPermission annotation to SystemApis in BluetoothPan, open up close method as a SystemApi, and BluetoothPan class now implements AutoCloseable and CloseGuard" am: 23deb3367f am: 264da33fe5 am: 4aa1811337

Change-Id: I720267221928468a4aa5579363ad4eb341f97389