diff -r 000000000000 -r 6474c204b198 netwerk/cache2/CacheLog.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/netwerk/cache2/CacheLog.cpp	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,30 @@
+/* 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 "CacheLog.h"
+
+namespace mozilla {
+namespace net {
+
+#if defined(PR_LOGGING)
+// Log module for cache2 (2013) cache implementation logging...
+//
+// To enable logging (see prlog.h for full details):
+//
+//    set NSPR_LOG_MODULES=cache2:5
+//    set NSPR_LOG_FILE=nspr.log
+//
+// this enables PR_LOG_DEBUG level information and places all output in
+// the file nspr.log
+PRLogModuleInfo* GetCache2Log()
+{
+  static PRLogModuleInfo *sLog;
+  if (!sLog)
+    sLog = PR_NewLogModule("cache2");
+  return sLog;
+}
+#endif
+
+} // net
+} // mozilla