1 files changed, 40 insertions, 0 deletions
diff --git a/dom/ipc/DocShellMessageUtils.cpp b/dom/ipc/DocShellMessageUtils.cpp
new file mode 100644
index 0000000000..d35d77840a
--- /dev/null
+++ b/dom/ipc/DocShellMessageUtils.cpp
@@ -0,0 +1,40 @@
+/* -*- 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/DocShellMessageUtils.h"
+#include "mozilla/dom/DOMTypes.h"
+#include "mozilla/ipc/IPDLParamTraits.h"
+#include "nsSerializationHelper.h"
+
+namespace mozilla::ipc {
+
+void IPDLParamTraits<nsDocShellLoadState*>::Write(IPC::Message* aMsg,
+                                                  IProtocol* aActor,
+                                                  nsDocShellLoadState* aParam) {
+  MOZ_RELEASE_ASSERT(aParam);
+  WriteIPDLParam(aMsg, aActor, aParam->Serialize());
+}
+
+bool IPDLParamTraits<nsDocShellLoadState*>::Read(
+    const IPC::Message* aMsg, PickleIterator* aIter, IProtocol* aActor,
+    RefPtr<nsDocShellLoadState>* aResult) {
+  dom::DocShellLoadStateInit loadState;
+  if (!ReadIPDLParam(aMsg, aIter, aActor, &loadState)) {
+    return false;
+  }
+
+  // Assert if we somehow don't have a URI in our IPDL type, because we can't
+  // construct anything out of it. This mimics the assertion in the constructor
+  // for nsDocShellLoadState, but makes it clearer that the
+  // DocShellLoadStateInit IPC object can't be clearly converted into a
+  // nsDocShellLoadState.
+  MOZ_ASSERT(loadState.URI());
+
+  *aResult = new nsDocShellLoadState(loadState);
+  return true;
+}
+
+}  // namespace mozilla::ipc