diff -r 000000000000 -r 6474c204b198 ipc/testshell/XPCShellEnvironment.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/ipc/testshell/XPCShellEnvironment.h	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,65 @@
+/* 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 _IPC_TESTSHELL_XPCSHELLENVIRONMENT_H_
+#define _IPC_TESTSHELL_XPCSHELLENVIRONMENT_H_
+
+#include "base/basictypes.h"
+
+#include <string>
+#include <stdio.h>
+
+#include "nsAutoJSValHolder.h"
+#include "nsCOMPtr.h"
+#include "nsDebug.h"
+#include "nsString.h"
+#include "nsJSPrincipals.h"
+#include "nsContentUtils.h"
+#include "js/TypeDecls.h"
+
+struct JSPrincipals;
+
+namespace mozilla {
+namespace ipc {
+
+class XPCShellEnvironment
+{
+public:
+    static XPCShellEnvironment* CreateEnvironment();
+    ~XPCShellEnvironment();
+
+    void ProcessFile(JSContext *cx, JS::Handle<JSObject*> obj,
+                     const char *filename, FILE *file, bool forceTTY);
+    bool EvaluateString(const nsString& aString,
+                        nsString* aResult = nullptr);
+
+    JSPrincipals* GetPrincipal() {
+        return nsJSPrincipals::get(nsContentUtils::GetSystemPrincipal());
+    }
+
+    JSObject* GetGlobalObject() {
+        return mGlobalHolder.ToJSObject();
+    }
+
+    void SetIsQuitting() {
+        mQuitting = true;
+    }
+    bool IsQuitting() {
+        return mQuitting;
+    }
+
+protected:
+    XPCShellEnvironment();
+    bool Init();
+
+private:
+    nsAutoJSValHolder mGlobalHolder;
+
+    bool mQuitting;
+};
+
+} /* namespace ipc */
+} /* namespace mozilla */
+
+#endif /* _IPC_TESTSHELL_XPCSHELLENVIRONMENT_H_ */