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

chrome/browser/extensions/api/socket/udp_socket.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 "chrome/browser/extensions/api/socket/udp_socket.h"
 
 #include "chrome/browser/extensions/api/api_resource.h"
 #include "net/base/ip_endpoint.h"
 #include "net/base/net_errors.h"
 #include "net/udp/datagram_socket.h"
@@ skipping 90 matching lines @@
     return net::ERR_SOCKET_NOT_CONNECTED;
   else
     return socket_.Write(io_buffer, io_buffer_size, callback);
 }
 
 void UDPSocket::RecvFrom(int count,
                          const RecvFromCompletionCallback& callback) {
   DCHECK(!callback.is_null());
 
   if (!recv_from_callback_.is_null()) {
-    callback.Run(net::ERR_IO_PENDING, NULL, "", 0);
+    callback.Run(net::ERR_IO_PENDING, NULL, std::string(), 0);
     return;
   } else {
     recv_from_callback_ = callback;
   }
 
   int result = net::ERR_FAILED;
   scoped_refptr<net::IOBuffer> io_buffer;
   scoped_refptr<IPEndPoint> address;
   do {
     if (count < 0) {
@@ skipping 94 matching lines @@
   recv_from_callback_.Reset();
 }
 
 void UDPSocket::OnSendToComplete(int result) {
   DCHECK(!send_to_callback_.is_null());
   send_to_callback_.Run(result);
   send_to_callback_.Reset();
 }
 
 }  // namespace extensions