What and where is in Google Chrome?

Question

API

I'm tired of once again killing all sorts of mail ru guards and changing incomprehensible default pages in chrome on a girl's/mother's/grandmother's laptop, etc.
And since I'm very lazy, I thought that I could write a utility for this, which in one click would save me from all this. But everything is not so simple! You can remove strange things from the registry without problems, but what about the same chrome? What and where to look for? I did not find documentation on the structure of its files.
I found only where the history and cookies are stored, but this is not enough for me!
Is there any config file describing default pages, default search engines?
Maybe someone knows where there is a description of the structure of user files, ie. what and where it is.
I would not refuse information about other browsers :)
Thank you!

Answer 1

bm.yandex.ru/?from=prov_soft
back in Avast there used to be something like that.

Answer 2

Isn't it easier to warn "infection" than to pick everything out later from nowhere? (get tired of picking)