Rewrite scoped_ptr<T>(NULL) to use the default ctor in chromeos/.

chromeos/dbus/ibus/ibus_object.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 "chromeos/dbus/ibus/ibus_object.h"
 
 #include "base/logging.h"
 #include "base/values.h"
 #include "chromeos/dbus/ibus/ibus_property.h"
 #include "chromeos/dbus/ibus/ibus_text.h"
 #include "dbus/message.h"
 #include "dbus/values_util.h"
 
 namespace chromeos {
 
 ///////////////////////////////////////////////////////////////////////////////
 // IBusObjectReader
 IBusObjectReader::IBusObjectReader(const std::string& type_name,
                                    dbus::MessageReader* reader)
     : type_name_(type_name),
       original_reader_(reader),
-      top_variant_reader_(NULL),
-      contents_reader_(NULL),
-      check_result_(IBUS_OBJECT_NOT_CHECKED) {
-}
+      check_result_(IBUS_OBJECT_NOT_CHECKED) {}
 
 IBusObjectReader::~IBusObjectReader() {
   for (std::map<std::string, base::Value*>::iterator ite = attachments_.begin();
        ite != attachments_.end(); ++ite)
     delete ite->second;
 }
 
 bool IBusObjectReader::Init() {
   DCHECK(original_reader_);
   DCHECK_EQ(IBUS_OBJECT_NOT_CHECKED, check_result_);
@@ skipping 300 matching lines @@
   dbus::MessageWriter variant_writer(NULL);
   dict_writer.OpenVariant("v", &variant_writer);
 
   dbus::AppendBasicTypeValueDataAsVariant(&variant_writer, value);
   dict_writer.CloseContainer(&variant_writer);
   attachment_writer_->CloseContainer(&variant_writer);
   return true;
 }
 
 }  // namespace chromeos