CHAT MSG BATTLEGROUND LEADER

<Added in Patch 1.12>
Fired when a message is received from the leader of the battleground group
 "CHAT_MSG_BATTLEGROUND_LEADER", arg1, arg2, arg3, arg11, arg12
==Arguments==
; arg1: chat message
; arg2: author
; arg3: language
;arg11: Chat lineID
;arg12: Sender GUID
Category:API events/Unformatted