rem: this.mAccService = Components.classes["@mozilla.org/accessibleRetrieval;1"] .getService(Components.interfaces.nsIAccessibleRetrieval); 
add: this.mAccService = XPCU.getService(kAccessibleRetrievalCID, nsIAccessibleRetrieval); 
context: function AccessiblePropsViewer(){  this.mURL = window.location;  this.mObsMan = new ObserverManager(this);  this.mAccService = Components.classes["@mozilla.org/accessibleRetrieval;1"]                      .getService(Components.interfaces.nsIAccessibleRetrieval);}
meta: 10234	/local1/tlutelli/issta_data/temp/all_js/javascript/2007_temp/2007/10234/65af55c036c2fce9278aa46de4aa62f602de4109/accessibleProps.js/clean/extensions/inspector/resources/content/viewers/accessibleProps/accessibleProps.js