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

net/tools/flip_server/flip_in_mem_edsm_server.cc

 // Copyright (c) 2011 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 <errno.h>
 #include <signal.h>
 #include <sys/file.h>
 #include <sys/stat.h>
 
 #include <iostream>
@@ skipping 317 matching lines @@
                                NULL);
   }
 
   // Spdy Server Acceptor
   net::MemoryCache spdy_memory_cache;
   if (cl.HasSwitch("spdy-server")) {
     spdy_memory_cache.AddFiles();
     std::string value = cl.GetSwitchValueASCII("spdy-server");
     std::vector<std::string> valueArgs = split(value, ',');
     while (valueArgs.size() < 4)
-      valueArgs.push_back("");
+      valueArgs.push_back(std::string());
     g_proxy_config.AddAcceptor(net::FLIP_HANDLER_SPDY_SERVER,
-                               valueArgs[0], valueArgs[1],
-                               valueArgs[2], valueArgs[3],
-                               "", "", "", "",
+                               valueArgs[0],
+                               valueArgs[1],
+                               valueArgs[2],
+                               valueArgs[3],
+                               std::string(),
+                               std::string(),
+                               std::string(),
+                               std::string(),
                                0,
                                FLAGS_accept_backlog_size,
                                FLAGS_disable_nagle,
                                FLAGS_accepts_per_wake,
                                FLAGS_reuseport,
                                wait_for_iface,
                                &spdy_memory_cache);
   }
 
   // Spdy Server Acceptor
   net::MemoryCache http_memory_cache;
   if (cl.HasSwitch("http-server")) {
     http_memory_cache.AddFiles();
     std::string value = cl.GetSwitchValueASCII("http-server");
     std::vector<std::string> valueArgs = split(value, ',');
     while (valueArgs.size() < 4)
-      valueArgs.push_back("");
+      valueArgs.push_back(std::string());
     g_proxy_config.AddAcceptor(net::FLIP_HANDLER_HTTP_SERVER,
-                               valueArgs[0], valueArgs[1],
-                               valueArgs[2], valueArgs[3],
-                               "", "", "", "",
+                               valueArgs[0],
+                               valueArgs[1],
+                               valueArgs[2],
+                               valueArgs[3],
+                               std::string(),
+                               std::string(),
+                               std::string(),
+                               std::string(),
                                0,
                                FLAGS_accept_backlog_size,
                                FLAGS_disable_nagle,
                                FLAGS_accepts_per_wake,
                                FLAGS_reuseport,
                                wait_for_iface,
                                &http_memory_cache);
   }
 
   std::vector<net::SMAcceptorThread*> sm_worker_threads_;
@@ skipping 34 matching lines @@
       break;
     }
     usleep(1000*10);  // 10 ms
   }
 
   unlink(PIDFILE);
   close(pidfile_fd);
   return 0;
 }