diff -r 000000000000 -r 6474c204b198 dom/network/interfaces/nsIDOMNetworkStats.idl
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/dom/network/interfaces/nsIDOMNetworkStats.idl	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,48 @@
+/* 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/. */
+
+#include "nsISupports.idl"
+
+interface nsIDOMMozNetworkStatsInterface;
+
+[scriptable, builtinclass, uuid(3b16fe17-5583-483a-b486-b64a3243221c)]
+interface nsIDOMMozNetworkStatsData : nsISupports
+{
+  readonly attribute unsigned long   rxBytes;   // Received bytes.
+  readonly attribute unsigned long   txBytes;   // Sent bytes.
+  readonly attribute jsval           date;      // Date.
+};
+
+[scriptable, builtinclass, uuid(f1996e44-1057-4d4b-8ff8-919e76c4cfa9)]
+interface nsIDOMMozNetworkStats : nsISupports
+{
+  /**
+   * App manifest URL of an application for specifying the per-app stats of the
+   * specified app.
+   */
+  readonly attribute DOMString    appManifestURL;
+
+  /**
+   * Service type is used to retrieve the corresponding "system-only" stats.
+   * E.g., "Tethering", "OTA", etc.
+   */
+  readonly attribute DOMString    serviceType;
+
+  /**
+   * Network the returned data belongs to.
+   */
+  readonly attribute nsIDOMMozNetworkStatsInterface network;
+
+  /**
+   * Stats for a network.
+   */
+  readonly attribute jsval        data;      // array of NetworkStatsData.
+                                             // one element per day.
+
+  /**
+   * Dates
+   */
+  readonly attribute jsval        start; // Date.
+  readonly attribute jsval        end;   // Date.
+};