diff -r 000000000000 -r 6474c204b198 accessible/src/windows/msaa/Platform.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/accessible/src/windows/msaa/Platform.cpp	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,36 @@
+/* -*- 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 "Platform.h"
+
+#include "AccEvent.h"
+#include "Compatibility.h"
+#include "HyperTextAccessibleWrap.h"
+#include "nsWinUtils.h"
+
+#include "mozilla/ClearOnShutdown.h"
+
+using namespace mozilla;
+using namespace mozilla::a11y;
+
+void
+a11y::PlatformInit()
+{
+  Compatibility::Init();
+
+  nsWinUtils::MaybeStartWindowEmulation();
+  ClearOnShutdown(&HyperTextAccessibleWrap::sLastTextChangeAcc);
+  ClearOnShutdown(&HyperTextAccessibleWrap::sLastTextChangeString);
+}
+
+void
+a11y::PlatformShutdown()
+{
+  ::DestroyCaret();
+
+  nsWinUtils::ShutdownWindowEmulation();
+}
+