diff -r 000000000000 -r 6474c204b198 intl/locale/src/mac/nsCollationMacUC.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/intl/locale/src/mac/nsCollationMacUC.h	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,49 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* 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 nsCollationMacUC_h_
+#define nsCollationMacUC_h_
+
+#include "nsICollation.h"
+#include "nsCollation.h"
+#include "mozilla/Attributes.h"
+#include <Carbon/Carbon.h>
+
+// Maximum number of characters for a buffer to remember 
+// the generated collation key.
+const uint32_t kCacheSize = 128;
+// According to the documentation, the length of the key should typically be
+// at least 5 * textLength, but 6* would be safer.
+const uint32_t kCollationValueSizeFactor = 6;
+
+class nsCollationMacUC MOZ_FINAL : public nsICollation {
+
+public: 
+  nsCollationMacUC();
+  ~nsCollationMacUC(); 
+
+  // nsISupports interface
+  NS_DECL_ISUPPORTS
+
+  // nsICollation interface
+  NS_DECL_NSICOLLATION
+
+protected:
+  nsresult ConvertLocale(nsILocale* aNSLocale, LocaleRef* aMacLocale);
+  nsresult StrengthToOptions(const int32_t aStrength,
+                             UCCollateOptions* aOptions);
+  nsresult EnsureCollator(const int32_t newStrength);
+
+private:
+  bool mInit;
+  bool mHasCollator;
+  LocaleRef mLocale;
+  int32_t mLastStrength;
+  CollatorRef mCollator;
+  void *mBuffer; // temporary buffer to generate collation keys
+  uint32_t mBufferLen; // byte length of buffer
+};
+
+#endif  /* nsCollationMacUC_h_ */