Bug 894940 - ProcessPriorityManagerChild::Init() is never called r=jlebar

dom/ipc/ProcessPriorityManager.cpp

@@ -1045,6 +1045,7 @@ ProcessPriorityManagerChild::StaticInit()
 {
   if (!sSingleton) {
     sSingleton = new ProcessPriorityManagerChild();
+    sSingleton->Init();
     ClearOnShutdown(&sSingleton);
   }
 }