diff -r 000000000000 -r 6474c204b198 ipc/glue/nsIIPCSerializableInputStream.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/ipc/glue/nsIIPCSerializableInputStream.h	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,87 @@
+/* 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_nsIIPCSerializableInputStream_h
+#define mozilla_ipc_nsIIPCSerializableInputStream_h
+
+#include "nsISupports.h"
+#include "mozilla/Attributes.h"
+
+struct nsTArrayDefaultAllocator;
+template <class> class nsTArray;
+
+namespace mozilla {
+namespace ipc {
+
+class FileDescriptor;
+class InputStreamParams;
+
+} // namespace ipc
+} // namespace mozilla
+
+#define NS_IIPCSERIALIZABLEINPUTSTREAM_IID \
+  {0xb0211b14, 0xea6d, 0x40d4, {0x87, 0xb5, 0x7b, 0xe3, 0xdf, 0xac, 0x09, 0xd1}}
+
+class NS_NO_VTABLE nsIIPCSerializableInputStream : public nsISupports
+{
+public:
+  typedef nsTArray<mozilla::ipc::FileDescriptor>
+          FileDescriptorArray;
+
+  NS_DECLARE_STATIC_IID_ACCESSOR(NS_IIPCSERIALIZABLEINPUTSTREAM_IID)
+
+  virtual void
+  Serialize(mozilla::ipc::InputStreamParams& aParams,
+            FileDescriptorArray& aFileDescriptors) = 0;
+
+  virtual bool
+  Deserialize(const mozilla::ipc::InputStreamParams& aParams,
+              const FileDescriptorArray& aFileDescriptors) = 0;
+};
+
+NS_DEFINE_STATIC_IID_ACCESSOR(nsIIPCSerializableInputStream,
+                              NS_IIPCSERIALIZABLEINPUTSTREAM_IID)
+
+#define NS_DECL_NSIIPCSERIALIZABLEINPUTSTREAM                                  \
+  virtual void                                                                 \
+  Serialize(mozilla::ipc::InputStreamParams&,                                  \
+            FileDescriptorArray&) MOZ_OVERRIDE;                                \
+                                                                               \
+  virtual bool                                                                 \
+  Deserialize(const mozilla::ipc::InputStreamParams&,                          \
+              const FileDescriptorArray&) MOZ_OVERRIDE;
+
+#define NS_FORWARD_NSIIPCSERIALIZABLEINPUTSTREAM(_to)                          \
+  virtual void                                                                 \
+  Serialize(mozilla::ipc::InputStreamParams& aParams,                          \
+            FileDescriptorArray& aFileDescriptors) MOZ_OVERRIDE                \
+  {                                                                            \
+    _to Serialize(aParams, aFileDescriptors);                                  \
+  }                                                                            \
+                                                                               \
+  virtual bool                                                                 \
+  Deserialize(const mozilla::ipc::InputStreamParams& aParams,                  \
+              const FileDescriptorArray& aFileDescriptors) MOZ_OVERRIDE        \
+  {                                                                            \
+    return _to Deserialize(aParams, aFileDescriptors);                         \
+  }
+
+#define NS_FORWARD_SAFE_NSIIPCSERIALIZABLEINPUTSTREAM(_to)                     \
+  virtual void                                                                 \
+  Serialize(mozilla::ipc::InputStreamParams& aParams,                          \
+            FileDescriptorArray& aFileDescriptors) MOZ_OVERRIDE                \
+  {                                                                            \
+    if (_to) {                                                                 \
+      _to->Serialize(aParams, aFileDescriptors);                               \
+    }                                                                          \
+  }                                                                            \
+                                                                               \
+  virtual bool                                                                 \
+  Deserialize(const mozilla::ipc::InputStreamParams& aParams,                  \
+              const FileDescriptorArray& aFileDescriptors) MOZ_OVERRIDE        \
+  {                                                                            \
+    return _to ? _to->Deserialize(aParams, aFileDescriptors) : false;          \
+  }
+
+#endif // mozilla_ipc_nsIIPCSerializableInputStream_h