Initialize IPC:ChannelHandle from existing HANDLE

ipc/ipc_message_utils.cc

 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "ipc/ipc_message_utils.h"
 
 #include "base/file_path.h"
 #include "base/json/json_writer.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/nullable_string16.h"
@@ skipping 415 matching lines @@
                                             std::string* l) {
   if (p.auto_close) {
     l->append(StringPrintf("FD(%d auto-close)", p.fd));
   } else {
     l->append(StringPrintf("FD(%d)", p.fd));
   }
 }
 #endif  // defined(OS_POSIX)
 
 void ParamTraits<IPC::ChannelHandle>::Write(Message* m, const param_type& p) {
+#if defined(OS_WIN)
+  // On Windows marshalling pipe handle is not supported.
+  DCHECK(p.pipe.handle == NULL);
+#endif  // defined (OS_WIN)
   WriteParam(m, p.name);
 #if defined(OS_POSIX)
   WriteParam(m, p.socket);
 #endif
 }
 
 bool ParamTraits<IPC::ChannelHandle>::Read(const Message* m, void** iter,
                                            param_type* r) {
   return ReadParam(m, iter, &r->name)
 #if defined(OS_POSIX)
@@ skipping 40 matching lines @@
       ReadParam(m, iter, &r->routing_id) &&
       ReadParam(m, iter, &r->type) &&
       ReadParam(m, iter, &r->flags) &&
       ReadParam(m, iter, &r->sent) &&
       ReadParam(m, iter, &r->receive) &&
       ReadParam(m, iter, &r->dispatch) &&
       ReadParam(m, iter, &r->params);
 }
 
 }  // namespace IPC