Saves a chat window's font size setting. Used by the default UI's function FCF_SetChatWindowFontSize() which also handles changing the font displayed in a FloatingChatFrame.
See also Chat functions.
Signature:
SetChatWindowSize(index, size)
Arguments:
index- Index of a chat frame (between 1 andNUM_CHAT_WINDOWS) (number)size- Font size for the chat window (in points) (number)