You might have found one lightforge ingot in that chest, but that's not enough to craft anything decent!$B$BYou should go back there and look for more. Maybe the murlocs around that wrecked ship have lightforge ingots on them.
Gather 5 lightforge ingots, then return to Glorin Steelbrow in the Wetlands.
Return to Glorin Steelbrow at Menethil Harbor in Wetlands.