Doubtful.
BMW owns the rights to Triumph (cars) and won't give them up - they also retained Riley. With the MG-Rover group also go the naming rights to Austin, Morris, and Wolseley. Though these might be good revivals, there's little equity left in these names in England or Europe and there'd be no connection to China.
I suppose a nice luxury car might be marketed as Wolseley-Chinoise, but I doubt such a plan would ever get off the drawing board.
Pontiac, though not doing all that well, isn't an independant company. It's owned by GM and like all the other GM brands, it will stay with GM forever. GM also owns the rights to many other little brands that once played a role in it's history - Scripps-Booth, GEO, LaSalle, Marquette, Oldsmobile, Viking, Oakland (one of the original five and the parent of Pontiac), etc.
There simply aren't any little companies to gobble up. It's far more likely, however, that Chinese companies will start gobbling eachother up as they consolidate into bigger, more powerful companies.