ppb_graphics3d_swap_buffers: fix return value
ppb_graphics3d_swap_buffers: fix return value

reuben/freshplayerplugin,grevutiu-gabriel/freshplayerplugin,reuben/freshplayerplugin,Papapashu/freshplayerplugin,Papapashu/freshplayerplugin,Papapashu/freshplayerplugin,grevutiu-gabriel/freshplayerplugin,reuben/freshplayerplugin