diff -r 000000000000 -r 6474c204b198 dom/mobilemessage/src/SmsSegmentInfo.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/dom/mobilemessage/src/SmsSegmentInfo.h	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,37 @@
+/* -*- 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 mozilla_dom_mobilemessage_SmsSegmentInfo_h
+#define mozilla_dom_mobilemessage_SmsSegmentInfo_h
+
+#include "nsIDOMSmsSegmentInfo.h"
+#include "mozilla/Attributes.h"
+#include "mozilla/dom/mobilemessage/SmsTypes.h"
+
+namespace mozilla {
+namespace dom {
+
+class SmsSegmentInfo MOZ_FINAL : public nsIDOMMozSmsSegmentInfo
+{
+public:
+  NS_DECL_ISUPPORTS
+  NS_DECL_NSIDOMMOZSMSSEGMENTINFO
+
+  SmsSegmentInfo(int32_t aSegments,
+                 int32_t aCharsPerSegment,
+                 int32_t aCharsAvailableInLastSegment);
+
+  SmsSegmentInfo(const mobilemessage::SmsSegmentInfoData& aData);
+
+  const mobilemessage::SmsSegmentInfoData& GetData() const;
+
+private:
+  mobilemessage::SmsSegmentInfoData mData;
+};
+
+} // namespace dom
+} // namespace mozilla
+
+#endif // mozilla_dom_mobilemessage_SmsSegmentInfo_h