Merge commit 'b2ad0f18bc030535687aed67f5c3a3139045dd84' * commit 'b2ad0f18bc030535687aed67f5c3a3139045dd84': Introduce BluetoothAdapter.getDefaultAdapter().
Merge commit 'b2ad0f18bc030535687aed67f5c3a3139045dd84' * commit 'b2ad0f18bc030535687aed67f5c3a3139045dd84': Introduce BluetoothAdapter.getDefaultAdapter().