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diff --git a/accessible/atk/AccessibleWrap.h b/accessible/atk/AccessibleWrap.h
new file mode 100644
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+++ b/accessible/atk/AccessibleWrap.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 __NS_ACCESSIBLE_WRAP_H__
+#define __NS_ACCESSIBLE_WRAP_H__
+
+#include "nsCOMPtr.h"
+#include "LocalAccessible.h"
+
+struct _AtkObject;
+typedef struct _AtkObject AtkObject;
+
+enum AtkProperty {
+  PROP_0,  // gobject convention
+  PROP_NAME,
+  PROP_DESCRIPTION,
+  PROP_PARENT,  // ancestry has changed
+  PROP_ROLE,
+  PROP_LAYER,
+  PROP_MDI_ZORDER,
+  PROP_TABLE_CAPTION,
+  PROP_TABLE_COLUMN_DESCRIPTION,
+  PROP_TABLE_COLUMN_HEADER,
+  PROP_TABLE_ROW_DESCRIPTION,
+  PROP_TABLE_ROW_HEADER,
+  PROP_TABLE_SUMMARY,
+  PROP_LAST  // gobject convention
+};
+
+struct AtkPropertyChange {
+  int32_t type;  // property type as listed above
+  void* oldvalue;
+  void* newvalue;
+};
+
+namespace mozilla {
+namespace a11y {
+
+class MaiHyperlink;
+
+/**
+ * Atk specific functionality for an accessibility tree node that originated in
+ * mDoc's content process.
+ *
+ * AccessibleWrap, and its descendents in atk directory provide the
+ * implementation of AtkObject.
+ */
+class AccessibleWrap : public LocalAccessible {
+ public:
+  AccessibleWrap(nsIContent* aContent, DocAccessible* aDoc);
+  virtual ~AccessibleWrap();
+  void ShutdownAtkObject();
+
+  virtual void Shutdown() override;
+
+  // return the atk object for this AccessibleWrap
+  virtual void GetNativeInterface(void** aOutAccessible) override;
+  virtual nsresult HandleAccEvent(AccEvent* aEvent) override;
+
+  AtkObject* GetAtkObject(void);
+  static AtkObject* GetAtkObject(LocalAccessible* aAccessible);
+
+  bool IsValidObject();
+
+  static const char* ReturnString(nsAString& aString) {
+    static nsCString returnedString;
+    CopyUTF16toUTF8(aString, returnedString);
+    return returnedString.get();
+  }
+
+  static void GetKeyBinding(Accessible* aAccessible, nsAString& aResult);
+
+  static Accessible* GetColumnHeader(TableAccessible* aAccessible,
+                                     int32_t aColIdx);
+  static Accessible* GetRowHeader(TableAccessible* aAccessible,
+                                  int32_t aRowIdx);
+
+ protected:
+  nsresult FireAtkStateChangeEvent(AccEvent* aEvent, AtkObject* aObject);
+  nsresult FireAtkTextChangedEvent(AccEvent* aEvent, AtkObject* aObject);
+
+  AtkObject* mAtkObject;
+
+ private:
+  uint16_t CreateMaiInterfaces();
+};
+
+}  // namespace a11y
+}  // namespace mozilla
+
+#endif /* __NS_ACCESSIBLE_WRAP_H__ */