diff -r 000000000000 -r 6474c204b198 dom/plugins/ipc/ChildAsyncCall.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/dom/plugins/ipc/ChildAsyncCall.h	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,41 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+ * vim: sw=2 ts=8 et :
+ */
+/* 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 mozilla_plugins_ChildAsyncCall_h
+#define mozilla_plugins_ChildAsyncCall_h
+
+#include "PluginMessageUtils.h"
+#include "base/task.h"
+
+namespace mozilla {
+namespace plugins {
+
+typedef void (*PluginThreadCallback)(void*);
+
+class PluginInstanceChild;
+
+class ChildAsyncCall : public CancelableTask
+{
+public:
+  ChildAsyncCall(PluginInstanceChild* instance,
+                 PluginThreadCallback aFunc, void* aUserData);
+
+  void Run() MOZ_OVERRIDE;
+  void Cancel() MOZ_OVERRIDE;
+  
+protected:
+  PluginInstanceChild* mInstance;
+  PluginThreadCallback mFunc;
+  void* mData;
+
+  void RemoveFromAsyncList();
+};
+
+} // namespace plugins
+} // namespace mozilla
+
+#endif // mozilla_plugins_ChildAsyncCall_h