1 files changed, 50 insertions, 0 deletions
diff --git a/ipc/glue/RandomAccessStreamUtils.h b/ipc/glue/RandomAccessStreamUtils.h
new file mode 100644
index 0000000000..3ca79537eb
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+++ b/ipc/glue/RandomAccessStreamUtils.h
@@ -0,0 +1,50 @@
+/* -*- 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 mozilla_ipc_RandomAccessStreamUtils_h
+#define mozilla_ipc_RandomAccessStreamUtils_h
+
+template <class T>
+class nsCOMPtr;
+
+class nsIInterfaceRequestor;
+class nsIRandomAccessStream;
+
+namespace mozilla {
+
+template <class T>
+class Maybe;
+
+template <typename T>
+class MovingNotNull;
+
+template <typename V, typename E>
+class Result;
+
+namespace ipc {
+
+class RandomAccessStreamParams;
+
+// Serialize an nsIRandomAccessStream to be sent over IPC infallibly.
+RandomAccessStreamParams SerializeRandomAccessStream(
+    MovingNotNull<nsCOMPtr<nsIRandomAccessStream>> aStream,
+    nsIInterfaceRequestor* aCallbacks);
+
+Maybe<RandomAccessStreamParams> SerializeRandomAccessStream(
+    nsCOMPtr<nsIRandomAccessStream> aStream, nsIInterfaceRequestor* aCallbacks);
+
+// Deserialize an nsIRandomAccessStream received from an actor call.  These
+// methods work in both the child and parent.
+Result<MovingNotNull<nsCOMPtr<nsIRandomAccessStream>>, bool>
+DeserializeRandomAccessStream(RandomAccessStreamParams& aStreamParams);
+
+Result<nsCOMPtr<nsIRandomAccessStream>, bool> DeserializeRandomAccessStream(
+    Maybe<RandomAccessStreamParams>& aStreamParams);
+
+}  // namespace ipc
+}  // namespace mozilla
+
+#endif  // mozilla_ipc_RandomAccessStreamUtils_h