hide internal functions in nw.Window
hide internal functions in nw.Window

kurainooni/nw.js,kurainooni/nw.js,kurainooni/nw.js,nwjs/nw.js,kurainooni/nw.js,nwjs/nw.js,kurainooni/nw.js,nwjs/nw.js,nwjs/nw.js,nwjs/nw.js,kurainooni/nw.js,nwjs/nw.js,kurainooni/nw.js