Yeah I understand that, but that stuff is from 2015! The way OP's post was written it made me believe next week you wouldn't be able to play WGT (or use any other flash sites) on Chrome anymore which is just not true. Maybe I just misinterpreted it but the reality is that Chrome is just stopping (already stopped, rather) support for NPAPI plugins and WGT will still be very available to Chrome users.
One of the links you posted even says:
"
PPAPI plugins still work
Plugins that use a newer, more secure system called Pepper API (PPAPI) still work. That includes plugins that come with Chrome, like Adobe Flash. There's no need to install anything extra because PPAPI plugins will update when Chrome does.
"
So it's clear that WGT will still work on Chrome until the eventual end of PPAPI.