Bug 852687 - updating uuid of nsIWindowMediator. r=bz

xpfe/appshell/public/nsIWindowMediator.idl

@@ -20,7 +20,7 @@ interface nsIWidget;
 interface nsIDOMWindow;
 interface nsIWindowMediatorListener;
 
-[scriptable, uuid(808b2fa3-8a02-49ca-9104-5f77299e090b)]
+[scriptable, uuid(30cda5a1-a6df-4f32-9a73-0e59a32928c5)]
 interface nsIWindowMediator: nsISupports
 {
   /** Return an enumerator which iterates over all windows of type aWindowType