diff -r 000000000000 -r 6474c204b198 dom/ipc/FileDescriptorSetChild.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/dom/ipc/FileDescriptorSetChild.h	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,48 @@
+/* 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_dom_FileDescriptorSetChild_h__
+#define mozilla_dom_FileDescriptorSetChild_h__
+
+#include "mozilla/Assertions.h"
+#include "mozilla/Attributes.h"
+#include "mozilla/dom/PFileDescriptorSetChild.h"
+#include "nsTArray.h"
+
+namespace mozilla {
+
+namespace ipc {
+
+class FileDescriptor;
+
+} // namespace ipc
+
+namespace dom {
+
+class ContentChild;
+
+class FileDescriptorSetChild MOZ_FINAL: public PFileDescriptorSetChild
+{
+  friend class ContentChild;
+
+public:
+  typedef mozilla::ipc::FileDescriptor FileDescriptor;
+
+  void
+  ForgetFileDescriptors(nsTArray<FileDescriptor>& aFileDescriptors);
+
+private:
+  FileDescriptorSetChild(const FileDescriptor& aFileDescriptor);
+  ~FileDescriptorSetChild();
+
+  virtual bool
+  RecvAddFileDescriptor(const FileDescriptor& aFileDescriptor) MOZ_OVERRIDE;
+
+  nsTArray<FileDescriptor> mFileDescriptors;
+};
+
+} // namespace dom
+} // namespace mozilla
+
+#endif // mozilla_dom_FileDescriptorSetChild_h__