diff -r 000000000000 -r 6474c204b198 js/xpconnect/loader/mozJSSubScriptLoader.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/xpconnect/loader/mozJSSubScriptLoader.h	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,47 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/* vim: set ts=8 sts=4 et sw=4 tw=99: */
+/* 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 "nsCOMPtr.h"
+#include "mozIJSSubScriptLoader.h"
+
+class nsIPrincipal;
+class nsIURI;
+class LoadSubScriptOptions;
+
+#define MOZ_JSSUBSCRIPTLOADER_CID                                             \
+{ /* 829814d6-1dd2-11b2-8e08-82fa0a339b00 */                                  \
+    0x929814d6,                                                               \
+    0x1dd2,                                                                   \
+    0x11b2,                                                                   \
+    {0x8e, 0x08, 0x82, 0xfa, 0x0a, 0x33, 0x9b, 0x00}                          \
+}
+
+class nsIIOService;
+
+class mozJSSubScriptLoader : public mozIJSSubScriptLoader
+{
+public:
+    mozJSSubScriptLoader();
+    virtual ~mozJSSubScriptLoader();
+
+    // all the interface method declarations...
+    NS_DECL_ISUPPORTS
+    NS_DECL_MOZIJSSUBSCRIPTLOADER
+
+private:
+    nsresult ReadScript(nsIURI *uri, JSContext *cx, JSObject *target_obj,
+                        const nsAString &charset, const char *uriStr,
+                        nsIIOService *serv, nsIPrincipal *principal,
+                        bool reuseGlobal, JS::MutableHandleScript script,
+                        JS::MutableHandleFunction function);
+
+    nsresult DoLoadSubScriptWithOptions(const nsAString &url,
+                                        LoadSubScriptOptions  &options,
+                                        JSContext *cx,
+                                        JS::MutableHandle<JS::Value> retval);
+
+    nsCOMPtr<nsIPrincipal> mSystemPrincipal;
+};