Will filler in my brow bone for the space in my upper eye lid make my brow bone more pronounced?

Yes, hyaluronic acid based fillers like Restylane can be safely injected into the upper eyelid/eyebrows using a blunt tip microcannula. The filler should not make your bone look "heavy" if done appropriately. 

Thanks for your question.  Filler can be really useful to "fluff" or pad the area at the orbital rim.  This helps soften your look and make you look less gaunt/tired.  Usually in this area, where the skin is thin, the filler needs be placed deep so there are no ridges or bumps.  It is actually layered on the bone (not in it) and should not make the brow bone bigger or more pronounced.  We are trying to mimic the look of fatty tissue there so it will simply fill the gap and not shorten or minimize your lid.
I would use a light Hyaluronic acid filler such as versa or belotero for this purpose.  Juvederm, voluma etc will attract too much water and be too heavy for this area.
Hope this is helpful.  Best of luck to you,
Dr. Amy