diff -r 000000000000 -r 6474c204b198 netwerk/cache/nsICacheService.idl
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/netwerk/cache/nsICacheService.idl	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,85 @@
+/* -*- Mode: IDL; 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/. */
+
+#include "nsISupports.idl"
+#include "nsICache.idl"
+
+interface nsISimpleEnumerator;
+interface nsICacheListener;
+interface nsICacheSession;
+interface nsICacheVisitor;
+interface nsIEventTarget;
+
+[scriptable, uuid(14dbe1e9-f3bc-45af-92f4-2c574fcd4e39)]
+interface nsICacheService : nsISupports
+{
+    /**
+     * Create a cache session
+     *
+     * A cache session represents a client's access into the cache.  The cache
+     * session is not "owned" by the cache service.  Hence, it is possible to
+     * create duplicate cache sessions.  Entries created by a cache session
+     * are invisible to other cache sessions, unless the cache sessions are
+     * equivalent.
+     *
+     * @param clientID - Specifies the name of the client using the cache.
+     * @param storagePolicy - Limits the storage policy for all entries
+     *   accessed via the returned session.  As a result, devices excluded
+     *   by the storage policy will not be searched when opening entries
+     *   from the returned session.
+     * @param streamBased - Indicates whether or not the data being cached
+     *   can be represented as a stream.  The storagePolicy must be 
+     *   consistent with the value of this field.  For example, a non-stream-
+     *   based cache entry can only have a storage policy of STORE_IN_MEMORY.
+     * @return new cache session.
+     */
+    nsICacheSession createSession(in string                 clientID,
+                                  in nsCacheStoragePolicy   storagePolicy,
+                                  in boolean                streamBased);
+
+    /**
+     * Visit entries stored in the cache.  Used to implement about:cache.
+     */
+    void visitEntries(in nsICacheVisitor visitor);
+
+    /**
+     * Evicts all entries in all devices implied by the storage policy.
+     *
+     * @note This function may evict some items but will throw if it fails to evict
+     *       everything.
+     */
+    void evictEntries(in nsCacheStoragePolicy  storagePolicy);
+
+    /**
+     * Event target which is used for I/O operations
+     */
+    readonly attribute nsIEventTarget cacheIOTarget;
+};
+
+%{C++
+/**
+ * Observer service notification that is sent when
+ * nsICacheService::evictEntries() or nsICacheSession::evictEntries()
+ * is called.
+ */
+#define NS_CACHESERVICE_EMPTYCACHE_TOPIC_ID "cacheservice:empty-cache"
+%}
+
+[scriptable, builtinclass, uuid(d0fc8d38-db80-4928-bf1c-b0085ddfa9dc)]
+interface nsICacheServiceInternal : nsICacheService
+{
+    /**
+     * This is an internal interface. It changes so frequently that it probably
+     * went away while you were reading this.
+     */
+
+    /**
+     * Milliseconds for which the service lock has been held. 0 if unlocked.
+     */
+    readonly attribute double lockHeldTime;
+};
+
+