diff -r 000000000000 -r 6474c204b198 uriloader/exthandler/ExternalHelperAppChild.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/uriloader/exthandler/ExternalHelperAppChild.h	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,45 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* 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_dom_ExternalHelperAppChild_h
+#define mozilla_dom_ExternalHelperAppChild_h
+
+#include "mozilla/dom/PExternalHelperAppChild.h"
+#include "nsExternalHelperAppService.h"
+#include "nsIStreamListener.h"
+
+class nsIDivertableChannel;
+
+namespace mozilla {
+namespace dom {
+
+class ExternalHelperAppChild : public PExternalHelperAppChild
+                             , public nsIStreamListener
+{
+public:
+    NS_DECL_ISUPPORTS
+    NS_DECL_NSISTREAMLISTENER
+    NS_DECL_NSIREQUESTOBSERVER
+
+    ExternalHelperAppChild();
+    virtual ~ExternalHelperAppChild();
+
+    // Give the listener a real nsExternalAppHandler to complete processing on
+    // the child.
+    void SetHandler(nsExternalAppHandler *handler) { mHandler = handler; }
+
+    virtual bool RecvCancel(const nsresult& aStatus) MOZ_OVERRIDE;
+private:
+    nsresult DivertToParent(nsIDivertableChannel *divertable, nsIRequest *request);
+
+    nsRefPtr<nsExternalAppHandler> mHandler;
+    nsresult mStatus;
+};
+
+} // namespace dom
+} // namespace mozilla
+
+#endif // mozilla_dom_ExternalHelperAppChild_h