Small cleanups to ported QuicServer and dependencies

net/quic/quic_server_bin.cc

 // Copyright 2014 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.
 //
 // A binary wrapper for QuicServer.  It listens forever on --port
 // (default 6121) until it's killed or ctrl-cd to death.
 
 #include <iostream>
 
 #include "base/at_exit.h"
@@ skipping 24 matching lines @@
         "\n"
         "Options:\n"
         "-h, --help                  show this help message and exit\n"
         "--port=<port>               specify the port to listen on\n"
         "--quic_in_memory_cache_dir  directory containing response data\n"
         "                            to load\n";
     std::cout << help_str;
     exit(0);
   }
 
+  base::FilePath::StringType cache_dir;
   if (line->HasSwitch("quic_in_memory_cache_dir")) {
-    net::g_quic_in_memory_cache_dir =
-        line->GetSwitchValueNative("quic_in_memory_cache_dir");
+    cache_dir = line->GetSwitchValueNative("quic_in_memory_cache_dir");
+    net::g_quic_in_memory_cache_dir = &cache_dir;
   }
 
   if (line->HasSwitch("port")) {
     int port;
     if (base::StringToInt(line->GetSwitchValueASCII("port"), &port)) {
       FLAGS_port = port;
     }
   }
 
   base::AtExitManager exit_manager;
@@ skipping 10 matching lines @@
 
   int rc = server.Listen(net::IPEndPoint(ip, FLAGS_port));
   if (rc < 0) {
     return 1;
   }
 
   base::RunLoop().Run();
 
   return 0;
 }