diff -r 000000000000 -r 6474c204b198 dom/base/nsIEntropyCollector.idl
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/dom/base/nsIEntropyCollector.idl	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,35 @@
+/* -*- Mode: C++; tab-width: 8; 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/. */
+
+#include "nsISupports.idl"
+
+/**
+ * Interface for an object that wants to gather "random"
+ * data to be used for entropy purposes.
+ */
+%{C++
+
+/*
+ * If anyone wants to collect the entropy distributed by the
+ * event handler, they'll have to implement this CONTRACTID
+ */
+#define NS_ENTROPYCOLLECTOR_CONTRACTID "@mozilla.org/security/entropy;1"
+%}
+/* Buffer type - for passing random data to the entropy
+ * collector.
+ */
+[ptr] native buffer(void);
+
+[uuid(6f883680-ab9d-11d4-9978-00b0d02354a0)]
+interface nsIEntropyCollector : nsISupports
+{
+
+  /**
+   * Add the following bytes to the pool of data to be used
+   * in gathering entropy.
+   */
+  void randomUpdate(in buffer entropy, in long bufLen); 
+
+};