Rewrite std::string("") to std::string(), Linux edition.

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 61 matching lines @@
     case base::Value::TYPE_DOUBLE:
       return "d";
     case base::Value::TYPE_STRING:
       return "s";
     case base::Value::TYPE_BINARY:
       return "ay";
     case base::Value::TYPE_DICTIONARY:
       return "a{sv}";
     default:
       DLOG(ERROR) << "Unexpected type " << value.GetType();
-      return "";
+      return std::string();
   }
 }
 
 }  // namespace
 
 base::Value* PopDataAsValue(MessageReader* reader) {
   base::Value* result = NULL;
   switch (reader->GetDataType()) {
     case Message::INVALID_DATA:
       // Do nothing.
@@ skipping 154 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