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

Change-Id: I2fb3f600c8a175d609a5ffc421b33a2284cdb6b3