diff -r 000000000000 -r 6474c204b198 netwerk/cache2/nsICacheStorageVisitor.idl
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/netwerk/cache2/nsICacheStorageVisitor.idl	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,23 @@
+/* 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 nsICacheEntry;
+
+[scriptable, uuid(692dda47-3b21-4d0d-853a-f4d27cc324d0)]
+interface nsICacheStorageVisitor : nsISupports
+{
+  /**
+   */
+  void onCacheStorageInfo(in uint32_t aEntryCount, in uint64_t aConsumption);
+
+  /**
+   */
+  void onCacheEntryInfo(in nsICacheEntry aEntry);
+
+  /**
+   */
+  void onCacheEntryVisitCompleted();
+};