diff -r 000000000000 -r 6474c204b198 uriloader/exthandler/nsExternalProtocolHandler.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/uriloader/exthandler/nsExternalProtocolHandler.h	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,37 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+ *
+ * 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 nsExternalProtocolHandler_h___
+#define nsExternalProtocolHandler_h___
+
+#include "nsIExternalProtocolHandler.h"
+#include "nsCOMPtr.h"
+#include "nsString.h"
+#include "nsWeakReference.h"
+#include "nsIExternalProtocolService.h"
+#include "mozilla/Attributes.h"
+
+class nsIURI;
+
+// protocol handlers need to support weak references if we want the netlib nsIOService to cache them.
+class nsExternalProtocolHandler MOZ_FINAL : public nsIExternalProtocolHandler, public nsSupportsWeakReference
+{
+public:
+	NS_DECL_THREADSAFE_ISUPPORTS
+	NS_DECL_NSIPROTOCOLHANDLER
+	NS_DECL_NSIEXTERNALPROTOCOLHANDLER
+
+	nsExternalProtocolHandler();
+	~nsExternalProtocolHandler();
+
+protected:
+  // helper function
+  bool HaveExternalProtocolHandler(nsIURI * aURI);
+	nsCString	m_schemeName;
+};
+
+#endif // nsExternalProtocolHandler_h___
+