Bug 695648 - Remove unnecessary friend class mozilla::AutoRestore<bool> from nsContentUtils; r=smaug a=removal

content/base/public/nsContentUtils.h

@@ -192,7 +192,6 @@ struct nsShortcutCandidate {
 class nsContentUtils
 {
   friend class nsAutoScriptBlockerSuppressNodeRemoved;
-  friend class mozilla::AutoRestore<bool>;
   typedef mozilla::dom::Element Element;
   typedef mozilla::TimeDuration TimeDuration;