diff -r 000000000000 -r 6474c204b198 accessible/src/windows/ia2/ia2AccessibleRelation.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/accessible/src/windows/ia2/ia2AccessibleRelation.h	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,82 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim:expandtab:shiftwidth=2:tabstop=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 _NS_ACCESSIBLE_RELATION_WRAP_H
+#define _NS_ACCESSIBLE_RELATION_WRAP_H
+
+#include "Accessible.h"
+#include "IUnknownImpl.h"
+#include "nsIAccessibleRelation.h"
+
+#include <utility>
+#include "nsTArray.h"
+
+#include "AccessibleRelation.h"
+
+namespace mozilla {
+namespace a11y {
+
+class ia2AccessibleRelation MOZ_FINAL : public IAccessibleRelation
+{
+public:
+  ia2AccessibleRelation(RelationType aType, Relation* aRel);
+
+  // IUnknown
+  DECL_IUNKNOWN
+
+  // IAccessibleRelation
+  virtual /* [propget] */ HRESULT STDMETHODCALLTYPE get_relationType(
+      /* [retval][out] */ BSTR *relationType);
+
+  virtual /* [propget] */ HRESULT STDMETHODCALLTYPE get_localizedRelationType(
+      /* [retval][out] */ BSTR *localizedRelationType);
+
+  virtual /* [propget] */ HRESULT STDMETHODCALLTYPE get_nTargets(
+      /* [retval][out] */ long *nTargets);
+
+  virtual /* [propget] */ HRESULT STDMETHODCALLTYPE get_target(
+      /* [in] */ long targetIndex,
+      /* [retval][out] */ IUnknown **target);
+
+  virtual /* [propget] */ HRESULT STDMETHODCALLTYPE get_targets(
+      /* [in] */ long maxTargets,
+      /* [length_is][size_is][out] */ IUnknown **target,
+      /* [retval][out] */ long *nTargets);
+
+  inline bool HasTargets() const
+    { return mTargets.Length(); }
+
+private:
+  ia2AccessibleRelation();
+  ia2AccessibleRelation(const ia2AccessibleRelation&);
+  ia2AccessibleRelation& operator = (const ia2AccessibleRelation&);
+
+  RelationType mType;
+  nsTArray<nsRefPtr<Accessible> > mTargets;
+};
+
+
+/**
+ * Gecko to IAccessible2 relation types map.
+ */
+
+const WCHAR *const IA2_RELATION_NULL = L"";
+
+#define RELATIONTYPE(geckoType, name, atkType, msaaType, ia2Type) \
+  std::pair<RelationType, const WCHAR *const>(RelationType::geckoType, ia2Type),
+
+static const std::pair<RelationType, const WCHAR *const> sRelationTypePairs[] = {
+#include "RelationTypeMap.h"
+};
+
+#undef RELATIONTYPE
+
+} // namespace a11y
+} // namespace mozilla
+
+#endif
+