Having thought more about this request, I realize that it would only really help me if I were to add everything I want searchable for a page into the entity name – which I generally don’t want to do.
But my other search indexing solution seems to work well for my needs 
so I will stick with that and Fibery’s search instead of Chrome’s history search.
My dream solution 
would be to have a new Formula field to define the browser Window Title for entities, separately from the entity Name. Then I would have drool-worthy customized search capability, right within the browser search bar 