diff -r 000000000000 -r 6474c204b198 netwerk/base/src/nsSerializationHelper.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/netwerk/base/src/nsSerializationHelper.cpp	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,73 @@
+/* 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 "nsSerializationHelper.h"
+
+
+#include "mozilla/Base64.h"
+#include "nsISerializable.h"
+#include "nsIObjectOutputStream.h"
+#include "nsIObjectInputStream.h"
+#include "nsString.h"
+#include "nsBase64Encoder.h"
+#include "nsAutoPtr.h"
+#include "nsComponentManagerUtils.h"
+#include "nsStringStream.h"
+
+using namespace mozilla;
+
+nsresult
+NS_SerializeToString(nsISerializable* obj, nsCSubstring& str)
+{
+  nsRefPtr<nsBase64Encoder> stream(new nsBase64Encoder());
+  if (!stream)
+    return NS_ERROR_OUT_OF_MEMORY;
+
+  nsCOMPtr<nsIObjectOutputStream> objstream =
+      do_CreateInstance("@mozilla.org/binaryoutputstream;1");
+  if (!objstream)
+    return NS_ERROR_OUT_OF_MEMORY;
+
+  objstream->SetOutputStream(stream);
+  nsresult rv =
+      objstream->WriteCompoundObject(obj, NS_GET_IID(nsISupports), true);
+  NS_ENSURE_SUCCESS(rv, rv);
+  return stream->Finish(str);
+}
+
+nsresult
+NS_DeserializeObject(const nsCSubstring& str, nsISupports** obj)
+{
+  nsCString decodedData;
+  nsresult rv = Base64Decode(str, decodedData);
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  nsCOMPtr<nsIInputStream> stream;
+  rv = NS_NewCStringInputStream(getter_AddRefs(stream), decodedData);
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  nsCOMPtr<nsIObjectInputStream> objstream =
+      do_CreateInstance("@mozilla.org/binaryinputstream;1");
+  if (!objstream)
+    return NS_ERROR_OUT_OF_MEMORY;
+
+  objstream->SetInputStream(stream);
+  return objstream->ReadObject(true, obj);
+}
+
+NS_IMPL_ISUPPORTS(nsSerializationHelper, nsISerializationHelper)
+
+NS_IMETHODIMP
+nsSerializationHelper::SerializeToString(nsISerializable *serializable,
+                                         nsACString & _retval)
+{
+  return NS_SerializeToString(serializable, _retval);
+}
+
+NS_IMETHODIMP
+nsSerializationHelper::DeserializeObject(const nsACString & input,
+                                         nsISupports **_retval)
+{
+  return NS_DeserializeObject(input, _retval);
+}