diff -r 000000000000 -r 6474c204b198 netwerk/base/src/NetworkActivityMonitor.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/netwerk/base/src/NetworkActivityMonitor.h	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,47 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef NetworkActivityMonitor_h___
+#define NetworkActivityMonitor_h___
+
+#include <stdint.h>
+#include "nscore.h"
+#include "prio.h"
+#include "prinrval.h"
+
+namespace mozilla { namespace net {
+
+class NetworkActivityMonitor
+{
+public:
+  enum Direction {
+    kUpload   = 0,
+    kDownload = 1
+  };
+
+  NetworkActivityMonitor();
+  ~NetworkActivityMonitor();
+
+  static nsresult Init(int32_t blipInterval);
+  static nsresult Shutdown();
+
+  static nsresult AttachIOLayer(PRFileDesc *fd);
+  static nsresult DataInOut(Direction direction);
+
+private:
+  nsresult Init_Internal(int32_t blipInterval);
+  void PostNotification(Direction direction);
+
+  static NetworkActivityMonitor * gInstance;
+  PRDescIdentity                  mLayerIdentity;
+  PRIOMethods                     mLayerMethods;
+  PRIntervalTime                  mBlipInterval;
+  PRIntervalTime                  mLastNotificationTime[2];
+};
+
+}} // namespace mozilla::net
+
+#endif /* NetworkActivityMonitor_h___ */