diff -r 000000000000 -r 6474c204b198 dom/ipc/DOMTypes.ipdlh
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/dom/ipc/DOMTypes.ipdlh	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,69 @@
+/* -*- Mode: C++; c-basic-offset: 2; indent-tabs-mode: nil; tab-width: 8 -*- */
+/* vim: set sw=4 ts=8 et tw=80 ft=cpp : */
+/* 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/. */
+
+include protocol PBlob;
+include InputStreamParams;
+
+using struct mozilla::SerializedStructuredCloneBuffer from "ipc/IPCMessageUtils.h";
+
+namespace mozilla {
+namespace dom {
+
+struct ClonedMessageData
+{
+  SerializedStructuredCloneBuffer data;
+  PBlob[] blobs;
+};
+
+struct NormalBlobConstructorParams
+{
+  nsString contentType;
+  uint64_t length;
+};
+
+struct FileBlobConstructorParams
+{
+  nsString name;
+  nsString contentType;
+  uint64_t length;
+  uint64_t modDate;
+};
+
+struct SlicedBlobConstructorParams
+{
+  PBlob source;
+  uint64_t begin;
+  uint64_t end;
+  nsString contentType;
+};
+
+struct MysteryBlobConstructorParams
+{
+  // Nothing is known about this type of blob.
+};
+
+union ChildBlobConstructorParams
+{
+  NormalBlobConstructorParams;
+  FileBlobConstructorParams;
+  SlicedBlobConstructorParams;
+  MysteryBlobConstructorParams;
+};
+
+struct ParentBlobConstructorParams
+{
+  ChildBlobConstructorParams blobParams;
+  OptionalInputStreamParams optionalInputStreamParams;
+};
+
+union BlobConstructorParams
+{
+  ChildBlobConstructorParams;
+  ParentBlobConstructorParams;
+};
+
+} // namespace dom
+} // namespace mozilla