diff -r 000000000000 -r 6474c204b198 dom/mobilemessage/src/SmsSegmentInfo.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/dom/mobilemessage/src/SmsSegmentInfo.cpp	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,65 @@
+/* -*- 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/. */
+
+#include "SmsSegmentInfo.h"
+#include "nsIDOMClassInfo.h"
+
+using namespace mozilla::dom::mobilemessage;
+
+DOMCI_DATA(MozSmsSegmentInfo, mozilla::dom::SmsSegmentInfo)
+
+namespace mozilla {
+namespace dom {
+
+NS_INTERFACE_MAP_BEGIN(SmsSegmentInfo)
+  NS_INTERFACE_MAP_ENTRY(nsIDOMMozSmsSegmentInfo)
+  NS_INTERFACE_MAP_ENTRY(nsISupports)
+  NS_DOM_INTERFACE_MAP_ENTRY_CLASSINFO(MozSmsSegmentInfo)
+NS_INTERFACE_MAP_END
+
+NS_IMPL_ADDREF(SmsSegmentInfo)
+NS_IMPL_RELEASE(SmsSegmentInfo)
+
+SmsSegmentInfo::SmsSegmentInfo(int32_t aSegments,
+                               int32_t aCharsPerSegment,
+                               int32_t aCharsAvailableInLastSegment)
+  : mData(aSegments, aCharsPerSegment, aCharsAvailableInLastSegment)
+{
+}
+
+SmsSegmentInfo::SmsSegmentInfo(const SmsSegmentInfoData& aData)
+  : mData(aData)
+{
+}
+
+NS_IMETHODIMP
+SmsSegmentInfo::GetSegments(int32_t* aSegments)
+{
+  *aSegments = mData.segments();
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+SmsSegmentInfo::GetCharsPerSegment(int32_t* aCharsPerSegment)
+{
+  *aCharsPerSegment = mData.charsPerSegment();
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+SmsSegmentInfo::GetCharsAvailableInLastSegment(int32_t* aCharsAvailableInLastSegment)
+{
+  *aCharsAvailableInLastSegment = mData.charsAvailableInLastSegment();
+  return NS_OK;
+}
+
+const SmsSegmentInfoData&
+SmsSegmentInfo::GetData() const
+{
+  return mData;
+}
+
+} // namespace dom
+} // namespace mozilla