Quite the opposite, they wanted to prevent vendor lock-in, so they pushed for standards like service workers and NaCL that eliminate the need for Chrome Apps.
But aren't those two only for getting better performance for web apps? Chrome Apps actually help getting a web app integrated into the OS, I don't see where (P)NaCl helps me with that.
I was just trying to look into this, I can't see a way for this to happen on a desktop, is my google-fu broken or is coming later. I was also looking for a desktop icon (or file or whatever).