dbus: add support for passing file descriptors

dbus/values_util.cc

 // Copyright (c) 2012 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 "dbus/values_util.h"
 
 #include "base/json/json_writer.h"
 #include "base/logging.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/values.h"
@@ skipping 145 matching lines @@
       if (reader->PopString(&value))
         result = Value::CreateStringValue(value);
       break;
     }
     case Message::OBJECT_PATH: {
       ObjectPath value;
       if (reader->PopObjectPath(&value))
         result = Value::CreateStringValue(value.value());
       break;
     }
+    case Message::UNIX_FD: {
+      // Cannot distinguish a file descriptor from an int
+      NOTREACHED();
+      break;
+    }
     case Message::ARRAY: {
       MessageReader sub_reader(NULL);
       if (reader->PopArray(&sub_reader)) {
         // If the type of the array's element is DICT_ENTRY, create a
         // DictionaryValue, otherwise create a ListValue.
         if (sub_reader.GetDataType() == Message::DICT_ENTRY) {
           scoped_ptr<DictionaryValue> dictionary_value(new DictionaryValue);
           if (PopDictionaryEntries(&sub_reader, dictionary_value.get()))
             result = dictionary_value.release();
         } else {
@@ skipping 65 matching lines @@
 
 void AppendBasicTypeValueDataAsVariant(MessageWriter* writer,
                                        const base::Value& value) {
   MessageWriter sub_writer(NULL);
   writer->OpenVariant(GetTypeSignature(value), &sub_writer);
   AppendBasicTypeValueData(&sub_writer, value);
   writer->CloseContainer(&sub_writer);
 }
 
 }  // namespace dbus