1 files changed, 54 insertions, 0 deletions
diff --git a/dom/ipc/ReferrerInfoUtils.cpp b/dom/ipc/ReferrerInfoUtils.cpp
new file mode 100644
index 0000000000..a2728e342c
--- /dev/null
+++ b/dom/ipc/ReferrerInfoUtils.cpp
@@ -0,0 +1,54 @@
+/* -*- 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/. */
+
+#include "mozilla/dom/ReferrerInfoUtils.h"
+
+#include "ipc/IPCMessageUtilsSpecializations.h"
+#include "nsSerializationHelper.h"
+#include "nsString.h"
+
+namespace IPC {
+
+void ParamTraits<nsIReferrerInfo*>::Write(MessageWriter* aWriter,
+                                          nsIReferrerInfo* aParam) {
+  bool isNull = !aParam;
+  WriteParam(aWriter, isNull);
+  if (isNull) {
+    return;
+  }
+  nsAutoCString infoString;
+  nsresult rv = NS_SerializeToString(aParam, infoString);
+  if (NS_FAILED(rv)) {
+    MOZ_CRASH("Unable to serialize referrer info.");
+    return;
+  }
+  WriteParam(aWriter, infoString);
+}
+
+bool ParamTraits<nsIReferrerInfo*>::Read(MessageReader* aReader,
+                                         RefPtr<nsIReferrerInfo>* aResult) {
+  bool isNull;
+  if (!ReadParam(aReader, &isNull)) {
+    return false;
+  }
+  if (isNull) {
+    *aResult = nullptr;
+    return true;
+  }
+  nsAutoCString infoString;
+  if (!ReadParam(aReader, &infoString)) {
+    return false;
+  }
+  nsCOMPtr<nsISupports> iSupports;
+  nsresult rv = NS_DeserializeObject(infoString, getter_AddRefs(iSupports));
+  NS_ENSURE_SUCCESS(rv, false);
+  nsCOMPtr<nsIReferrerInfo> referrerInfo = do_QueryInterface(iSupports);
+  NS_ENSURE_TRUE(referrerInfo, false);
+  *aResult = ToRefPtr(std::move(referrerInfo));
+  return true;
+}
+
+}  // namespace IPC