diff -r 000000000000 -r 6474c204b198 accessible/src/atk/AtkSocketAccessible.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/accessible/src/atk/AtkSocketAccessible.cpp	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,156 @@
+/* -*- 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/. */
+
+#include <atk/atk.h>
+#include "AtkSocketAccessible.h"
+
+#include "InterfaceInitFuncs.h"
+#include "nsMai.h"
+#include "mozilla/Likely.h"
+
+using namespace mozilla::a11y;
+
+AtkSocketEmbedType AtkSocketAccessible::g_atk_socket_embed = nullptr;
+GType AtkSocketAccessible::g_atk_socket_type = G_TYPE_INVALID;
+const char* AtkSocketAccessible::sATKSocketEmbedSymbol = "atk_socket_embed";
+const char* AtkSocketAccessible::sATKSocketGetTypeSymbol = "atk_socket_get_type";
+
+bool AtkSocketAccessible::gCanEmbed = FALSE;
+
+extern "C" void mai_atk_component_iface_init(AtkComponentIface* aIface);
+extern "C" GType mai_atk_socket_get_type(void);
+
+/* MaiAtkSocket */
+
+#define MAI_TYPE_ATK_SOCKET              (mai_atk_socket_get_type ())
+#define MAI_ATK_SOCKET(obj)              (G_TYPE_CHECK_INSTANCE_CAST ((obj),\
+                                          MAI_TYPE_ATK_SOCKET, MaiAtkSocket))
+#define MAI_IS_ATK_SOCKET(obj)           (G_TYPE_CHECK_INSTANCE_TYPE ((obj),\
+                                          MAI_TYPE_ATK_SOCKET))
+#define MAI_ATK_SOCKET_CLASS(klass)      (G_TYPE_CHECK_CLASS_CAST ((klass),\
+                                          MAI_TYPE_ATK_SOCKET,\
+                                          MaiAtkSocketClass))
+#define MAI_IS_ATK_SOCKET_CLASS(klass)   (G_TYPE_CHECK_CLASS_TYPE ((klass),\
+                                          MAI_TYPE_ATK_SOCKET))
+#define MAI_ATK_SOCKET_GET_CLASS(obj)    (G_TYPE_INSTANCE_GET_CLASS ((obj),\
+                                          MAI_TYPE_ATK_SOCKET,\
+                                          MaiAtkSocketClass))
+
+typedef struct _MaiAtkSocket
+{
+  AtkSocket parent;
+
+  AccessibleWrap* accWrap;
+} MaiAtkSocket;
+
+typedef struct _MaiAtkSocketClass
+{
+  AtkSocketClass parent_class;
+} MaiAtkSocketClass;
+
+G_DEFINE_TYPE_EXTENDED(MaiAtkSocket, mai_atk_socket,
+                       AtkSocketAccessible::g_atk_socket_type, 0,
+                       G_IMPLEMENT_INTERFACE(ATK_TYPE_COMPONENT,
+                                             mai_atk_component_iface_init))
+
+void
+mai_atk_socket_class_init(MaiAtkSocketClass* aAcc)
+{
+}
+
+void
+mai_atk_socket_init(MaiAtkSocket* aAcc)
+{
+}
+
+static AtkObject*
+mai_atk_socket_new(AccessibleWrap* aAccWrap)
+{
+  NS_ENSURE_TRUE(aAccWrap, nullptr);
+
+  MaiAtkSocket* acc = nullptr;
+  acc = static_cast<MaiAtkSocket*>(g_object_new(MAI_TYPE_ATK_SOCKET, nullptr));
+  NS_ENSURE_TRUE(acc, nullptr);
+
+  acc->accWrap = aAccWrap;
+  return ATK_OBJECT(acc);
+}
+
+extern "C" {
+static AtkObject*
+RefAccessibleAtPoint(AtkComponent* aComponent, gint aX, gint aY,
+                     AtkCoordType aCoordType)
+{
+  NS_ENSURE_TRUE(MAI_IS_ATK_SOCKET(aComponent), nullptr);
+
+  return refAccessibleAtPointHelper(MAI_ATK_SOCKET(aComponent)->accWrap,
+                                    aX, aY, aCoordType);
+}
+
+static void
+GetExtents(AtkComponent* aComponent, gint* aX, gint* aY, gint* aWidth,
+           gint* aHeight, AtkCoordType aCoordType)
+{
+  *aX = *aY = *aWidth = *aHeight = 0;
+
+  if (!MAI_IS_ATK_SOCKET(aComponent))
+    return;
+
+  getExtentsHelper(MAI_ATK_SOCKET(aComponent)->accWrap,
+                   aX, aY, aWidth, aHeight, aCoordType);
+}
+}
+
+void
+mai_atk_component_iface_init(AtkComponentIface* aIface)
+{
+  NS_ASSERTION(aIface, "Invalid Interface");
+  if (MOZ_UNLIKELY(!aIface))
+    return;
+
+  aIface->ref_accessible_at_point = RefAccessibleAtPoint;
+  aIface->get_extents = GetExtents;
+}
+
+AtkSocketAccessible::AtkSocketAccessible(nsIContent* aContent,
+                                         DocAccessible* aDoc,
+                                         const nsCString& aPlugId) :
+  AccessibleWrap(aContent, aDoc)
+{
+  mAtkObject = mai_atk_socket_new(this);
+  if (!mAtkObject)
+    return;
+
+  // Embeds the children of an AtkPlug, specified by plugId, as the children of
+  // this socket.
+  // Using G_TYPE macros instead of ATK_SOCKET macros to avoid undefined
+  // symbols.
+  if (gCanEmbed && G_TYPE_CHECK_INSTANCE_TYPE(mAtkObject, g_atk_socket_type) &&
+      !aPlugId.IsVoid()) {
+    AtkSocket* accSocket =
+      G_TYPE_CHECK_INSTANCE_CAST(mAtkObject, g_atk_socket_type, AtkSocket);
+    g_atk_socket_embed(accSocket, (gchar*)aPlugId.get());
+  }
+}
+
+NS_IMETHODIMP
+AtkSocketAccessible::GetNativeInterface(void** aOutAccessible)
+{
+  *aOutAccessible = mAtkObject;
+  return NS_OK;
+}
+
+void
+AtkSocketAccessible::Shutdown()
+{
+  if (mAtkObject) {
+    if (MAI_IS_ATK_SOCKET(mAtkObject))
+      MAI_ATK_SOCKET(mAtkObject)->accWrap = nullptr;
+    g_object_unref(mAtkObject);
+    mAtkObject = nullptr;
+  }
+  AccessibleWrap::Shutdown();
+}