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diff --git a/accessible/mac/AccessibleWrap.h b/accessible/mac/AccessibleWrap.h
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+/* clang-format off */
+/* -*- Mode: Objective-C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* clang-format on */
+/* 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/. */
+
+/* For documentation of the accessibility architecture,
+ * see http://lxr.mozilla.org/seamonkey/source/accessible/accessible-docs.html
+ */
+
+#ifndef _AccessibleWrap_H_
+#define _AccessibleWrap_H_
+
+#include <objc/objc.h>
+
+#include "LocalAccessible.h"
+#include "PlatformExtTypes.h"
+#include "States.h"
+
+#include "nsCOMPtr.h"
+
+#include "nsTArray.h"
+
+#if defined(__OBJC__)
+@class mozAccessible;
+#endif
+
+namespace mozilla {
+namespace a11y {
+
+/**
+ * Mac specific functionality for an accessibility tree node that originated in
+ * mDoc's content process.
+ */
+class AccessibleWrap : public LocalAccessible {
+ public:  // construction, destruction
+  AccessibleWrap(nsIContent* aContent, DocAccessible* aDoc);
+  virtual ~AccessibleWrap();
+
+  /**
+   * Get the native Obj-C object (mozAccessible).
+   */
+  virtual void GetNativeInterface(void** aOutAccessible) override;
+
+  /**
+   * The objective-c |Class| type that this accessible's native object
+   * should be instantied with.   used on runtime to determine the
+   * right type for this accessible's associated native object.
+   */
+  virtual Class GetNativeType();
+
+  virtual void Shutdown() override;
+
+  virtual nsresult HandleAccEvent(AccEvent* aEvent) override;
+
+ protected:
+  friend class xpcAccessibleMacInterface;
+
+  /**
+   * Get the native object. Create it if needed.
+   */
+#if defined(__OBJC__)
+  mozAccessible* GetNativeObject();
+#else
+  id GetNativeObject();
+#endif
+
+ private:
+  /**
+   * Our native object. Private because its creation is done lazily.
+   * Don't access it directly. Ever. Unless you are GetNativeObject() or
+   * Shutdown()
+   */
+#if defined(__OBJC__)
+  // if we are in Objective-C, we use the actual Obj-C class.
+  mozAccessible* mNativeObject;
+#else
+  id mNativeObject;
+#endif
+
+  /**
+   * We have created our native. This does not mean there is one.
+   * This can never go back to false.
+   * We need it because checking whether we need a native object cost time.
+   */
+  bool mNativeInited;
+};
+
+Class GetTypeFromRole(roles::Role aRole);
+
+}  // namespace a11y
+}  // namespace mozilla
+
+#endif