[transition] REC Request for Trace Context

From https://github.com/w3c/transitions/issues/223

# Link to internal transition

https://lists.w3.org/Archives/Team/w3t-comm/2020Jan/0130.html

# Link to previous transition

https://github.com/w3c/transitions/issues/186

Received on Monday, 3 February 2020 20:58:17 UTC