Issue #77245 by drpal, tedbow, nod_, phenaproxima, Wim Leers, googletorp,...

Issue #77245 by drpal, tedbow, nod_, phenaproxima, Wim Leers, googletorp, rteijeiro, vineet.osscube, tim.plunkett, idflood, joelpittet, pk188, lauriii, BarisW, lokapujya, chr.fritsch, droplet, andrewmacpherson, dmsmidt, dawehner, alexpott, jessebeach, NickWilde, DuaelFr, Cottser, seutje, samuel.mortenson: Provide a common API for displaying JavaScript messages