src: disable upgrade detector and bubble
src: disable upgrade detector and bubble

https://github.com/nwjs/chromium.src/commit/179504f03642ab3947949a9f396cfb85f3be3241

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