diff -r 000000000000 -r 6474c204b198 accessible/src/atk/AtkSocketAccessible.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/accessible/src/atk/AtkSocketAccessible.h	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,57 @@
+/* -*- 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 _AtkSocketAccessible_H_
+#define _AtkSocketAccessible_H_
+
+#include "AccessibleWrap.h"
+
+// This file gets included by nsAccessibilityService.cpp, which can't include
+// atk.h (or glib.h), so we can't rely on it being included.
+#ifdef __ATK_H__
+extern "C" typedef void (*AtkSocketEmbedType) (AtkSocket*, gchar*);
+#else
+extern "C" typedef void (*AtkSocketEmbedType) (void*, void*);
+#endif
+
+namespace mozilla {
+namespace a11y {
+
+/**
+ * Provides a AccessibleWrap wrapper around AtkSocket for out-of-process
+ * accessibles.
+ */
+class AtkSocketAccessible : public AccessibleWrap
+{
+public:
+
+  // Soft references to AtkSocket
+  static AtkSocketEmbedType g_atk_socket_embed;
+#ifdef __ATK_H__
+  static GType g_atk_socket_type;
+#endif
+  static const char* sATKSocketEmbedSymbol;
+  static const char* sATKSocketGetTypeSymbol;
+
+  /*
+   * True if the current Atk version supports AtkSocket and it was correctly
+   * loaded.
+   */
+  static bool gCanEmbed;
+
+  AtkSocketAccessible(nsIContent* aContent, DocAccessible* aDoc,
+                      const nsCString& aPlugId);
+
+  virtual void Shutdown();
+
+  // nsIAccessible
+  NS_IMETHODIMP GetNativeInterface(void** aOutAccessible);
+};
+
+} // namespace a11y
+} // namespace mozilla
+
+#endif