diff -r 000000000000 -r 6474c204b198 xpcom/base/nsErrorService.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/xpcom/base/nsErrorService.h	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,45 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/* 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 nsErrorService_h__
+#define nsErrorService_h__
+
+#include "mozilla/Attributes.h"
+
+#include "nsIErrorService.h"
+#include "nsHashtable.h"
+
+class nsInt2StrHashtable
+{
+public:
+    nsInt2StrHashtable();
+
+    nsresult  Put(uint32_t key, const char* aData);
+    char*     Get(uint32_t key);
+    nsresult  Remove(uint32_t key);
+
+protected:
+    nsObjectHashtable mHashtable;
+};
+
+class nsErrorService MOZ_FINAL : public nsIErrorService
+{
+public:
+    NS_DECL_ISUPPORTS
+    NS_DECL_NSIERRORSERVICE
+
+    nsErrorService() {}
+
+    static nsresult
+    Create(nsISupports* outer, const nsIID& aIID, void* *aInstancePtr);
+
+private:
+    ~nsErrorService() {}
+
+protected:
+    nsInt2StrHashtable mErrorStringBundleURLMap;
+};
+
+#endif // nsErrorService_h__