Not seen it mentioned in the discussion so far but where I work (UK) the 737NG requirement for engine run up in cold conditions is normally mentioned to ATC by crew when reporting ready.
"Tower XXX123 ready for departure, we will require 30 seconds on the runway"
It's not a formal procedure but 3 based operators of 737s do it often to aid ATC awareness. I believe it came out of regular local ATC/operator/pilot meetings.