Bug 1058904 - Disable AlarmsManager in prerendering; r=jst

--HG--
extra : amend_source : 7dcd338d4d21393b4569533a36923ca6e578dca2

dom/webidl/AlarmsManager.webidl

@@ -12,6 +12,8 @@
  Pref="dom.mozAlarms.enabled"]
 interface AlarmsManager {
   DOMRequest getAll();
+  [UnsafeInPrerendering]
   DOMRequest add(any date, DOMString respectTimezone, optional any data);
+  [UnsafeInPrerendering]
   void remove(unsigned long id);
 };