How do you expect Adobe to know what Google is going to do with their Chrome browser?
You would need to contact Google about their planned roadmap, not Adobe.
Google has been very transparent about about their roadmap for deprecating Flash Player, and all of the major browser vendors and Adobe are working together towards a graceful deprecation of Flash Player at the of 2020. I think it's safe to say that Google's engineering blog is an authoritative source for information.
Adobe provides a number of tools for either converting or producing replacement standards-based content, which developers can take advantage today. Wherever possible, we'd strongly recommend that content providers begin that migration effort, if they haven't already.