Bug 805527: Mark nsBindingManager as MOZ_FINAL to fix GCC -Wdelete-non-virtual-dtor warning. r=ehsan

content/xbl/src/nsBindingManager.h

@@ -30,7 +30,7 @@ template<class E> class nsRefPtr;
 typedef nsTArray<nsRefPtr<nsXBLBinding> > nsBindingList;
 class nsIPrincipal;
 
-class nsBindingManager : public nsStubMutationObserver
+class nsBindingManager MOZ_FINAL : public nsStubMutationObserver
 {
 public:
   NS_DECL_CYCLE_COLLECTING_ISUPPORTS