1 files changed, 48 insertions, 0 deletions
diff --git a/layout/generic/LayoutMessageUtils.h b/layout/generic/LayoutMessageUtils.h
new file mode 100644
index 0000000000..c62de8482a
--- /dev/null
+++ b/layout/generic/LayoutMessageUtils.h
@@ -0,0 +1,48 @@
+/* -*- 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/. */
+
+#ifndef LAYOUT_GENERIC_LAYOUTMESSAGEUTILS_H_
+#define LAYOUT_GENERIC_LAYOUTMESSAGEUTILS_H_
+
+#include "ipc/IPCMessageUtils.h"
+#include "nsIFrame.h"
+#include "mozilla/AspectRatio.h"
+
+namespace IPC {
+
+template <>
+struct ParamTraits<mozilla::IntrinsicSize> {
+  using paramType = mozilla::IntrinsicSize;
+
+  static void Write(Message* aMsg, const paramType& aParam) {
+    WriteParam(aMsg, aParam.width);
+    WriteParam(aMsg, aParam.height);
+  }
+
+  static bool Read(const Message* aMsg, PickleIterator* aIter,
+                   paramType* aResult) {
+    return ReadParam(aMsg, aIter, &aResult->width) &&
+           ReadParam(aMsg, aIter, &aResult->height);
+  }
+};
+
+template <>
+struct ParamTraits<mozilla::AspectRatio> {
+  using paramType = mozilla::AspectRatio;
+
+  static void Write(Message* aMsg, const paramType& aParam) {
+    WriteParam(aMsg, aParam.mRatio);
+  }
+
+  static bool Read(const Message* aMsg, PickleIterator* aIter,
+                   paramType* aResult) {
+    return ReadParam(aMsg, aIter, &aResult->mRatio);
+  }
+};
+
+}  // namespace IPC
+
+#endif  // LAYOUT_GENERIC_LAYOUTMESSAGEUTILS_H_