diff -r 000000000000 -r 6474c204b198 intl/locale/src/nsUConvPropertySearch.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/intl/locale/src/nsUConvPropertySearch.h	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,30 @@
+/* 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 nsUConvPropertySearch_h_
+#define nsUConvPropertySearch_h_
+
+#include "nsStringFwd.h"
+
+class nsUConvPropertySearch
+{
+  public:
+    /**
+     * Looks up a property by value.
+     *
+     * @param aProperties
+     *   the static property array
+     * @param aKey
+     *   the key to look up
+     * @param aValue
+     *   the return value (empty string if not found)
+     * @return NS_OK if found or NS_ERROR_FAILURE if not found
+     */
+    static nsresult SearchPropertyValue(const char* aProperties[][3],
+                                        int32_t aNumberOfProperties,
+                                        const nsACString& aKey,
+                                        nsACString& aValue);
+};
+
+#endif /* nsUConvPropertySearch_h_ */