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

remoting/host/setup/start_host.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 <stdio.h>
 #include <termios.h>
 
 #include "base/at_exit.h"
 #include "base/command_line.h"
 #include "base/run_loop.h"
@@ skipping 35 matching lines @@
   if (no_echo)
     SetEcho(false);
   const int kMaxLen = 1024;
   std::string str(kMaxLen, 0);
   char* result = fgets(&str[0], kMaxLen, stdin);
   if (no_echo) {
     printf("\n");
     SetEcho(true);
   }
   if (!result)
-    return "";
+    return std::string();
   size_t newline_index = str.find('\n');
   if (newline_index != std::string::npos)
     str[newline_index] = '\0';
   str.resize(strlen(&str[0]));
   return str;
 }
 
 // Called when the HostStarter has finished.
 void OnDone(HostStarter::Result result) {
   if (MessageLoop::current() != g_message_loop) {
@@ skipping 111 matching lines @@
 
   // Destroy the HostStarter and URLRequestContextGetter before stopping the
   // IO thread.
   host_starter.reset();
   url_request_context_getter = NULL;
 
   io_thread.Stop();
 
   return g_started ? 0 : 1;
 }