Bug 1660470 - Avoid including ProtocolUtils.h from header files. r=nika

Differential Revision: https://phabricator.services.mozilla.com/D93544

Depends on D93543

ipc/glue/ProtocolUtils.h

@@ -22,6 +22,7 @@
 #include "mozilla/ipc/Shmem.h"
 #include "mozilla/ipc/Transport.h"
 #include "mozilla/ipc/MessageLink.h"
+#include "mozilla/ipc/ProtocolUtilsFwd.h"
 #include "mozilla/LinkedList.h"
 #include "mozilla/Maybe.h"
 #include "mozilla/MozPromise.h"

ipc/glue/ProtocolUtilsFwd.h

@@ -0,0 +1,16 @@
+/* -*- 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 https://mozilla.org/MPL/2.0/. */
+
+#ifndef mozilla_ipc_ProtocolUtilsFwd_h
+#define mozilla_ipc_ProtocolUtilsFwd_h 1
+
+namespace mozilla::ipc {
+
+class IProtocol;
+
+}  // namespace mozilla::ipc
+
+#endif  // mozilla_ipc_ProtocolUtilsFwd_h

ipc/glue/moz.build

@@ -43,6 +43,7 @@ EXPORTS.mozilla.ipc += [
     "Neutering.h",
     "ProcessChild.h",
     "ProtocolUtils.h",
+    "ProtocolUtilsFwd.h",
     "ScopedXREEmbed.h",
     "SharedMemory.h",
     "SharedMemoryBasic.h",

ipc/ipdl/ipdl/builtin.py

@@ -52,7 +52,7 @@ HeaderIncludes = (
     "mozilla/OperatorNewExtensions.h",
     "mozilla/UniquePtr.h",
     "mozilla/ipc/FileDescriptor.h",
-    "mozilla/ipc/ProtocolUtils.h",
+    "mozilla/ipc/ProtocolUtilsFwd.h",
     "mozilla/ipc/Shmem.h",
 )
 
@@ -60,6 +60,7 @@ CppIncludes = (
     "ipc/IPCMessageUtils.h",
     "nsIFile.h",
     "GeckoProfiler.h",
+    "mozilla/ipc/ProtocolUtils.h",
     "mozilla/ipc/ShmemMessageUtils.h",
     "mozilla/ipc/TaintingIPCUtils.h",
 )