Is your feature request related to a problem? Please describe.
No.

Describe the solution you'd like
Blizzard's default chat places a tiny hourglass icon next to the playerlink of characters that are in Pandaria Remix. Retail characters see these icons in LFG, Trade, guild, and communities.

Additional context
The relevant code is simple, it's in the GetColoredName function of ChatFrame.lua (currently line 3560 and line 3540 respectively). It checks if the player GUID is a timerunner, slaps an atlas sequence just before the name, then the player link is wrapped around that. The util that adds the atlas is in Blizzard_TimerunningUtil.lua.

if arg12 and C_ChatInfo.IsTimerunningPlayer(arg12) then
	arg2 = TimerunningUtil.AddSmallIcon(arg2);
end

function TimerunningUtil.AddSmallIcon(text)
	return CreateAtlasMarkup("timerunning-glues-icon", 12, 12)..text;
end

Added to the latest alpha