Only use the LoggingLock when actually logging to a file

remoting/host/logging_posix.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 "remoting/host/logging.h"
 
 #include "base/logging.h"
 
 namespace remoting {
 
 void InitHostLogging() {
   // Write logs to the system debug log.
   logging::LoggingSettings settings;
   settings.logging_dest = logging::LOG_TO_SYSTEM_DEBUG_LOG;
-  // TODO(alexeypa): remove this line once logging is updated to not create
-  // the lock if the log file is not used.
-  settings.lock_log = logging::DONT_LOCK_LOG_FILE;
   logging::InitLogging(settings);
 }
 
 }  // namespace remoting