diff -r 000000000000 -r 6474c204b198 ipc/unixfd/UnixFileWatcher.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/ipc/unixfd/UnixFileWatcher.h	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,33 @@
+/* -*- Mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; tab-width: 40 -*- */
+/* vim: set ts=2 et sw=2 tw=80: */
+/* 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 mozilla_ipc_UnixFileWatcher_h
+#define mozilla_ipc_UnixFileWatcher_h
+
+#include "UnixFdWatcher.h"
+
+namespace mozilla {
+namespace ipc {
+
+class UnixFileWatcher : public UnixFdWatcher
+{
+public:
+  virtual ~UnixFileWatcher();
+
+  nsresult Open(const char* aFilename, int aFlags, mode_t aMode = 0);
+
+  // Callback method for successful open requests
+  virtual void OnOpened() {};
+
+protected:
+  UnixFileWatcher(MessageLoop* aIOLoop);
+  UnixFileWatcher(MessageLoop* aIOLoop, int aFd);
+};
+
+}
+}
+
+#endif