1 files changed, 38 insertions, 0 deletions
diff --git a/ipc/glue/IPCForwards.h b/ipc/glue/IPCForwards.h
new file mode 100644
index 0000000000..8aef885257
--- /dev/null
+++ b/ipc/glue/IPCForwards.h
@@ -0,0 +1,38 @@
+/* -*- 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 mozilla_ipc_IPCForwards_h
+#define mozilla_ipc_IPCForwards_h
+
+// A few helpers to avoid having to include lots of stuff in headers.
+
+namespace mozilla {
+template <typename T>
+class Maybe;
+
+namespace ipc {
+class IProtocol;
+}
+}  // namespace mozilla
+
+namespace IPC {
+class Message;
+class MessageReader;
+class MessageWriter;
+template <typename T, bool>
+class ReadResult;
+}  // namespace IPC
+
+// TODO(bug 1812271): Remove users of this macro.
+#define ALLOW_DEPRECATED_READPARAM                           \
+ public:                                                     \
+  enum { kHasDeprecatedReadParamPrivateConstructor = true }; \
+  template <typename, bool>                                  \
+  friend class IPC::ReadResult;                              \
+                                                             \
+ private:
+
+#endif