scriptsecuritymanager register for that and implement nsIChannelEventSink. Veto redirects if CheckLoadURI fails. Remove the explicit usage of nsIScriptSecurityManager from nsHttpChannel.cpp. This eliminates js and xpconnect from REQUIRES, and brings us closer to remove caps. r=darin sr=bz git-svn-id: svn://10.0.0.236/trunk@184313 18797224-902f-48f8-a5cc-f745e15eee43