As things stand presently, there are no official plans for the WWE Divas Championship at WrestleMania XXX. The original plan, before Naomi suffered the eye injury at RAW, was for the Funkadactyl to face AJ Lee for the title. While not official, the likely scenario would have seen Naomi win the title as part of a story line for the second season of the "Total Divas" reality show. Even though those plans may be off the table, there is a good chance that Naomi's injury and recovery will be used as part of a Total Divas story line.
As far as Naomi's role at WrestleMania XXX is concerned, after the company received word last week that she will not need surgery, there is still time to factor her into plans for this year's WrestleMania.
Naomi is expected to be out of in-ring action for four-to-six weeks. She won't be able to appear on television unless she drives to RAW, as the pressure on her eyes from a flight would be dangerous.