diff -r 000000000000 -r 6474c204b198 netwerk/cache/nsCacheDevice.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/netwerk/cache/nsCacheDevice.h	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,63 @@
+/* -*- 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 _nsCacheDevice_h_
+#define _nsCacheDevice_h_
+
+#include "nspr.h"
+#include "nsError.h"
+#include "nsICache.h"
+
+class nsIFile;
+class nsCString;
+class nsCacheEntry;
+class nsICacheVisitor;
+class nsIInputStream;
+class nsIOutputStream;
+
+/******************************************************************************
+* nsCacheDevice
+*******************************************************************************/
+class nsCacheDevice {
+public:
+    nsCacheDevice() { MOZ_COUNT_CTOR(nsCacheDevice); }
+    virtual ~nsCacheDevice() { MOZ_COUNT_DTOR(nsCacheDevice); }
+
+    virtual nsresult Init() = 0;
+    virtual nsresult Shutdown() = 0;
+
+    virtual const char *   GetDeviceID(void) = 0;
+    virtual nsCacheEntry * FindEntry( nsCString * key, bool *collision ) = 0;
+
+    virtual nsresult DeactivateEntry( nsCacheEntry * entry ) = 0;
+    virtual nsresult BindEntry( nsCacheEntry * entry ) = 0;
+    virtual void     DoomEntry( nsCacheEntry * entry ) = 0;
+
+    virtual nsresult OpenInputStreamForEntry(nsCacheEntry *     entry,
+                                             nsCacheAccessMode  mode,
+                                             uint32_t           offset,
+                                             nsIInputStream **  result) = 0;
+
+    virtual nsresult OpenOutputStreamForEntry(nsCacheEntry *     entry,
+                                              nsCacheAccessMode  mode,
+                                              uint32_t           offset,
+                                              nsIOutputStream ** result) = 0;
+
+    virtual nsresult GetFileForEntry( nsCacheEntry *    entry,
+                                      nsIFile **        result ) = 0;
+
+    virtual nsresult OnDataSizeChange( nsCacheEntry * entry, int32_t deltaSize ) = 0;
+
+    virtual nsresult Visit(nsICacheVisitor * visitor) = 0;
+
+    /**
+     * Device must evict entries associated with clientID.  If clientID == nullptr, all
+     * entries must be evicted.  Active entries must be doomed, rather than evicted.
+     */
+    virtual nsresult EvictEntries(const char * clientID) = 0;
+};
+
+#endif // _nsCacheDevice_h_