static final IBinder getBinder(Cursor cursor) {
        Bundle bundle = cursor.getExtras();
        bundle.setClassLoader(ParcelBinder.class.getClassLoader());
        ParcelBinder parcelBinder = bundle.getParcelable(SERVER_CHANNEL_BUNDLE_KEY);
        return parcelBinder.getIbinder();
    }
A Matrix Cursor implementation that a binder object is embedded in its extra
data.

@author RePlugin Team
replugin-host-library/replugin-host-lib/src/main/java/com/qihoo360/mobilesafe/svcmanager/ServiceChannelCursor.java