Define a LoggingSettings struct to use for InitLogging()

cloud_print/gcp20/prototype/gcp20_device.cc

 // Copyright 2013 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 "base/command_line.h"
 #include "base/logging.h"
 #include "base/threading/platform_thread.h"
 #include "cloud_print/gcp20/prototype/dns_sd_server.h"
 
 int main(int argc, char* argv[]) {
   CommandLine::Init(argc, argv);
 
-  logging::InitLogging(NULL,
-                       logging::LOG_ONLY_TO_SYSTEM_DEBUG_LOG,
-                       logging::LOCK_LOG_FILE,
-                       logging::APPEND_TO_OLD_LOG_FILE,
-                       logging::DISABLE_DCHECK_FOR_NON_OFFICIAL_RELEASE_BUILDS);
+  logging::LoggingSettings settings;
+  settings.logging_dest = logging::LOG_TO_SYSTEM_DEBUG_LOG;
+  logging::InitLogging(settings);
 
   DnsSdServer dns_sd_server;
   dns_sd_server.Start();
   base::PlatformThread::Sleep(base::TimeDelta::FromSeconds(2));
   dns_sd_server.Shutdown();
 
   return 0;
 }