diff -r 000000000000 -r 6474c204b198 media/webrtc/signaling/include/SharedPtr.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/media/webrtc/signaling/include/SharedPtr.h	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,44 @@
+/* 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/. */
+
+#pragma once
+
+#include <vector>
+#include "base/linked_ptr.h"
+#include "nsAutoPtr.h"
+
+#ifndef DECLARE_PTR
+#define DECLARE_PTR(className)\
+    class className;\
+    typedef linked_ptr<className> className##Ptr;
+#endif
+
+
+#ifndef DECLARE_PTR_VECTOR
+#define DECLARE_PTR_VECTOR(className)\
+    DECLARE_PTR(className)\
+    typedef std::vector<className##Ptr> className##Vtr;\
+    typedef linked_ptr<className##Vtr> className##Vtr##Ptr;
+#endif
+
+
+#ifndef NULL_PTR
+#define NULL_PTR(className) linked_ptr<className>()
+#endif
+
+// NSPR Variations of the above, to help with migration
+// from linked_ptr to nsRefPtr
+#ifndef DECLARE_NS_PTR
+#define DECLARE_NS_PTR(className)\
+    class className;\
+    typedef nsRefPtr<className> className##Ptr;
+#endif
+
+
+#ifndef DECLARE_NS_PTR_VECTOR
+#define DECLARE_NS_PTR_VECTOR(className)\
+    DECLARE_NS_PTR(className)\
+    typedef std::vector<className##Ptr> className##Vtr;\
+    typedef linked_ptr<className##Vtr> className##Vtr##Ptr;
+#endif