Defining a new browser protocol

Question

Google Chrome

Is it possible to use add-ons in modern browsers to define handlers for non-standard protocols?
It is the processing of the protocol inside the browser that is of interest, and not the call of an external utility, i.e. it is necessary that when you click on the link of the view, someproto://somethingthe browser loads the pages using a custom (rather simple) handler, or rather, in the background it translates addresses from the view someproto://somethingto http://somehost/something.
It is also important that the unconverted address of the new format remains in the address bar.
I have not come across the development of add-ons before - any links, examples, indications of documentation will be useful.

Answer 1

kb.mozillazine.org/Register_protocol

Answer 2

There is another interesting thing from Google - Web Intents, this is not quite right, but look, it will suddenly work: webintents.org/