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diff --git a/ipc/glue/IOThreadChild.h b/ipc/glue/IOThreadChild.h
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+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=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 dom_plugins_IOThreadChild_h
+#define dom_plugins_IOThreadChild_h
+
+#include "chrome/common/child_thread.h"
+#include "mozilla/ipc/Endpoint.h"
+#include "mozilla/ipc/NodeController.h"
+#include "mozilla/ipc/ProcessChild.h"
+
+namespace mozilla {
+namespace ipc {
+//-----------------------------------------------------------------------------
+
+// The IOThreadChild class represents a background thread where the
+// IPC IO MessageLoop lives.
+class IOThreadChild : public ChildThread {
+ public:
+ IOThreadChild()
+ : ChildThread(base::Thread::Options(MessageLoop::TYPE_IO,
+ 0)) // stack size
+ {}
+
+ ~IOThreadChild() = default;
+
+ static MessageLoop* message_loop() {
+ return IOThreadChild::current()->Thread::message_loop();
+ }
+
+ protected:
+ static IOThreadChild* current() {
+ return static_cast<IOThreadChild*>(ChildThread::current());
+ }
+
+ private:
+ DISALLOW_EVIL_CONSTRUCTORS(IOThreadChild);
+};
+
+} // namespace ipc
+} // namespace mozilla
+
+#endif // ifndef dom_plugins_IOThreadChild_h