add: osvr.addObserver(this, "prefservice:after-app-defaults", false); 
context:   _init: function()   {    // observer registration    const osvr = Cc['@mozilla.org/observer-service;1'].                 getService(Ci.nsIObserverService);    osvr.addObserver(this, "profile-before-change", false);    osvr.addObserver(this, "profile-change-teardown", false);    osvr.addObserver(this, "xpcom-shutdown", false);    osvr.addObserver(this, "final-ui-startup", false);    osvr.addObserver(this, "browser:purge-session-history", false);    osvr.addObserver(this, "quit-application-requested", false);    osvr.addObserver(this, "quit-application-granted", false);  },
meta: 10234	/local1/tlutelli/issta_data/temp/all_js/javascript/2007_temp/2007/10234/cde460cf9572e897ca57976e5c5587acbbefe26c/nsBrowserGlue.js/buggy/browser/components/nsBrowserGlue.js