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diff --git a/accessible/ipc/win/RemoteAccessible.h b/accessible/ipc/win/RemoteAccessible.h
new file mode 100644
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+++ b/accessible/ipc/win/RemoteAccessible.h
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+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=2 et sw=2 tw=80: */
+/* 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_a11y_RemoteAccessible_h
+#define mozilla_a11y_RemoteAccessible_h
+
+#include "LocalAccessible.h"
+#include "mozilla/a11y/RemoteAccessibleBase.h"
+#include "mozilla/a11y/Role.h"
+#include "nsString.h"
+#include "nsTArray.h"
+#include "nsRect.h"
+
+#include <oleacc.h>
+
+namespace mozilla {
+namespace a11y {
+
+/**
+ * Windows specific functionality for an accessibility tree node that originated
+ * in the parent process.
+ */
+class RemoteAccessible : public RemoteAccessibleBase<RemoteAccessible> {
+ public:
+  RemoteAccessible(uint64_t aID, RemoteAccessible* aParent,
+                   DocAccessibleParent* aDoc, role aRole, AccType aType,
+                   AccGenericType aGenericTypes, uint8_t aRoleMapEntryIndex)
+      : RemoteAccessibleBase(aID, aParent, aDoc, aRole, aType, aGenericTypes,
+                             aRoleMapEntryIndex) {
+    MOZ_COUNT_CTOR(RemoteAccessible);
+  }
+
+  MOZ_COUNTED_DTOR(RemoteAccessible)
+
+#include "mozilla/a11y/RemoteAccessibleShared.h"
+
+  virtual void TakeFocus() const override;
+  virtual void SetCaretOffset(int32_t aOffset) override;
+
+  bool GetCOMInterface(void** aOutAccessible) const;
+  void SetCOMInterface(const RefPtr<IAccessible>& aIAccessible) {
+    if (aIAccessible) {
+      mCOMProxy = aIAccessible;
+    } else {
+      // If we were supposed to be receiving an interface (hence the call to
+      // this function), but the interface turns out to be null, then we're
+      // broken for some reason.
+      mSafeToRecurse = false;
+    }
+  }
+
+ protected:
+  explicit RemoteAccessible(DocAccessibleParent* aThisAsDoc)
+      : RemoteAccessibleBase(aThisAsDoc) {
+    MOZ_COUNT_CTOR(RemoteAccessible);
+  }
+
+ private:
+  RefPtr<IAccessible> mCOMProxy;
+  bool mSafeToRecurse = true;
+};
+
+////////////////////////////////////////////////////////////////////////////////
+// RemoteAccessible downcasting method
+
+inline RemoteAccessible* Accessible::AsRemote() {
+  return IsRemote() ? static_cast<RemoteAccessible*>(this) : nullptr;
+}
+
+}  // namespace a11y
+}  // namespace mozilla
+
+#endif