Vimium sort of does this. If you press O and input a term, you get results from your history, but if you don't select any, it will google this term. You can als

Vimium sort of does this. If you press O and input a term, you get results from your history, but if you don't select any, it will google this term. You can also press B, which searches bookmarks specifically, and again if it doesn't find anything, it will search the term on Google. Also I find this B often gives better results than Google's address bar autocompletion.