diff -r 000000000000 -r 6474c204b198 ipc/glue/InputStreamUtils.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/ipc/glue/InputStreamUtils.h	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,39 @@
+/* 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_ipc_InputStreamUtils_h
+#define mozilla_ipc_InputStreamUtils_h
+
+#include "mozilla/ipc/InputStreamParams.h"
+#include "nsCOMPtr.h"
+#include "nsIInputStream.h"
+#include "nsTArray.h"
+
+namespace mozilla {
+namespace ipc {
+
+class FileDescriptor;
+
+void
+SerializeInputStream(nsIInputStream* aInputStream,
+                     InputStreamParams& aParams,
+                     nsTArray<FileDescriptor>& aFileDescriptors);
+
+void
+SerializeInputStream(nsIInputStream* aInputStream,
+                     OptionalInputStreamParams& aParams,
+                     nsTArray<FileDescriptor>& aFileDescriptors);
+
+already_AddRefed<nsIInputStream>
+DeserializeInputStream(const InputStreamParams& aParams,
+                       const nsTArray<FileDescriptor>& aFileDescriptors);
+
+already_AddRefed<nsIInputStream>
+DeserializeInputStream(const OptionalInputStreamParams& aParams,
+                       const nsTArray<FileDescriptor>& aFileDescriptors);
+
+} // namespace ipc
+} // namespace mozilla
+
+#endif // mozilla_ipc_InputStreamUtils_h