Starting in January 2015, Google’s Chrome browser will block all old-school Netscape Plug-In API NPAPI plugins. This doesn’t come as a huge surprise, given that Google started its efforts to remove NPAPI plugins more than a year ago.
Over the last year, Google went from recommending that developers move away from this old architecture to actively blocking almost all NPAPI plugins. There was, however, always a whitelist that allowed some of the most popular NPAPI plugins like Microsoft’s Silverlight, Unity and Google’s own Google Earth plugin to continue to run in the browser. Starting in January, even that’s going away and all of these plugins will be blocked by default.