Define a LoggingSettings struct to use for InitLogging()

sync/tools/sync_listen_notifications.cc

Index: sync/tools/sync_listen_notifications.cc
diff --git a/sync/tools/sync_listen_notifications.cc b/sync/tools/sync_listen_notifications.cc
index 92fde0ea05474c6cf6d38e737c9c03fb5c5f743e..dc548865c227e3b4122d78c77399e67ab965cec1 100644
--- a/sync/tools/sync_listen_notifications.cc
+++ b/sync/tools/sync_listen_notifications.cc
@@ -150,12 +150,9 @@ int SyncListenNotificationsMain(int argc, char* argv[]) {
 #endif
   base::AtExitManager exit_manager;
   CommandLine::Init(argc, argv);
-  logging::InitLogging(
-      NULL,
-      logging::LOG_ONLY_TO_SYSTEM_DEBUG_LOG,
-      logging::LOCK_LOG_FILE,
-      logging::DELETE_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);
 
   base::MessageLoop ui_loop;
   base::Thread io_thread("IO thread");