--- Source/WebKit/Platform/IPC/ConnectionHandle.serialization.in.orig	2026-04-28 13:00:57
+++ Source/WebKit/Platform/IPC/ConnectionHandle.serialization.in	2026-04-28 13:00:57
@@ -25,10 +25,4 @@
 #if USE(UNIX_DOMAIN_SOCKETS)
     UnixFileDescriptor m_handle;
 #endif
-#if OS(WINDOWS)
-    Win32Handle m_handle;
-#endif
-#if OS(DARWIN)
-    MachSendRight m_handle;
-#endif
 }
--- Source/WebKit/Shared/WebCoreArgumentCoders.serialization.in.orig	2026-04-29 22:00:00
+++ Source/WebKit/Shared/WebCoreArgumentCoders.serialization.in	2026-04-29 22:00:00
@@ -2578,21 +2578,12 @@
 
 #if USE(UNIX_DOMAIN_SOCKETS)
 headers: <wtf/unix/UnixFileDescriptor.h> "ArgumentCodersUnix.h"
-#endif
-#if OS(DARWIN)
-header: <wtf/MachSendRight.h>
 #endif
 
 [CustomHeader, RValue, WebKitPlatform] class WebCore::SharedMemoryHandle {
 #if USE(UNIX_DOMAIN_SOCKETS)
     [Validator='!!m_handle && *m_handle'] UnixFileDescriptor m_handle;
 #endif
-#if OS(DARWIN)
-    [Validator='!!m_handle && *m_handle'] MachSendRight m_handle;
-#endif
-#if OS(WINDOWS)
-    [Validator='!!m_handle && *m_handle'] Win32Handle m_handle;
-#endif
     uint64_t m_size;
 };