browser/components/protocolhandler

	Name	Description	Size	Coverage
	components.conf		595	-
	moz.build		432	-
<1%	test			-
	WebProtocolHandlerRegistrar.sys.mjs	Because we want to iterate over the known webmailers in the observe method and with each site visited, we want to check as fast as possible if the current site is already registered as a mailto handler. Using the sites domain name as a key ensures that we can use Map.has(...) later to find it.	25589	-