Wow what are even some of those services?! "IOS Promotion Service"?! Realised where part of chrome's "memory hog" stereotype may come from...
IOS Promotion Service might be https://codereview.chromium.org/2643723004/, so that's running on iOS and nowhere else. As for its value, that's for somebody else to decide (or everybody for themselves).
(Disclosure: working on Chrome OS firmware, which shares approximately no code at all with the components that end up in Chrome userland or any of its derivatives)
My biggest hope is that no matter how much Microsoft changes (Chakra instead of V8 would be very interesting to see) that it will remain fully and properly open source moving forward. I wanted to see the original Edge go this route but at least now they can.
Funny how these are now all browsers derived from work by Apple.