[GTK][WPE] Port UserMessage enum to new serialization format

https://bugs.webkit.org/show_bug.cgi?id=265190

Reviewed by Carlos Garcia Campos.

Remove the EnumTrait bits and use the generator for serialization.

* Source/WebKit/PlatformGTK.cmake:
* Source/WebKit/PlatformWPE.cmake:
* Source/WebKit/Shared/glib/UserMessage.h:
* Source/WebKit/Shared/glib/UserMessage.serialization.in: Added.

Canonical link: https://commits.webkit.org/271019@main

Source/WebKit/PlatformGTK.cmake

@@ -66,6 +66,7 @@ list(APPEND WebKit_SERIALIZATION_IN_FILES
     Shared/glib/DMABufRendererBufferFormat.serialization.in
     Shared/glib/DMABufRendererBufferMode.serialization.in
     Shared/glib/InputMethodState.serialization.in
+    Shared/glib/UserMessage.serialization.in
 )
 
 list(APPEND WebCore_SERIALIZATION_IN_FILES SoupNetworkProxySettings.serialization.in)

Source/WebKit/PlatformWPE.cmake

@@ -91,7 +91,10 @@ list(APPEND WebKit_UNIFIED_SOURCE_LIST_FILES
 
 list(APPEND WebCore_SERIALIZATION_IN_FILES SoupNetworkProxySettings.serialization.in)
 
-list(APPEND WebKit_SERIALIZATION_IN_FILES Shared/glib/InputMethodState.serialization.in)
+list(APPEND WebKit_SERIALIZATION_IN_FILES
+    Shared/glib/InputMethodState.serialization.in
+    Shared/glib/UserMessage.serialization.in
+)
 
 list(APPEND WebKit_DERIVED_SOURCES
     ${WebKit_DERIVED_SOURCES_DIR}/WebKitResourcesGResourceBundle.c

Source/WebKit/Shared/glib/UserMessage.h

@@ -25,7 +25,6 @@
 
 #pragma once
 
-#include <wtf/EnumTraits.h>
 #include <wtf/Vector.h>
 #include <wtf/glib/GRefPtr.h>
 #include <wtf/text/CString.h>
@@ -40,8 +39,14 @@ class Encoder;
 
 namespace WebKit {
 
+enum class UserMessageType : uint8_t {
+    Null,
+    Message,
+    Error,
+};
+
 struct UserMessage {
-    enum class Type { Null, Message, Error };
+    using Type = UserMessageType;
 
     UserMessage()
         : type(Type::Null)
@@ -66,16 +71,3 @@ struct UserMessage {
 };
 
 } // namespace WebKit
-
-namespace WTF {
-
-template<> struct EnumTraits<WebKit::UserMessage::Type> {
-    using values = EnumValues<
-        WebKit::UserMessage::Type,
-        WebKit::UserMessage::Type::Null,
-        WebKit::UserMessage::Type::Message,
-        WebKit::UserMessage::Type::Error
-    >;
-};
-
-} // namespace WTF

Source/WebKit/Shared/glib/UserMessage.serialization.in

@@ -0,0 +1,30 @@
+# Copyright (C) 2023 Igalia S.L.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+# 1. Redistributions of source code must retain the above copyright
+#    notice, this list of conditions and the following disclaimer.
+# 2. Redistributions in binary form must reproduce the above copyright
+#    notice, this list of conditions and the following disclaimer in the
+#    documentation and/or other materials provided with the distribution.
+#
+# THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
+# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+# THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+# PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
+# BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
+# THE POSSIBILITY OF SUCH DAMAGE.
+#
+
+header: "UserMessage.h"
+enum class WebKit::UserMessageType : uint8_t {
+     Null,
+     Message,
+     Error,
+};