Make headless_shell target compile for Windows

headless/app/headless_shell_main.cc

 // Copyright 2016 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 "base/command_line.h"
+#include "base/files/file_path.h"
+#include "base/path_service.h"
 #include "headless/public/headless_shell.h"
 
+void InitLogging() {
+  base::FilePath log_filename;

[Sami, 2017/02/09 17:51:40]

I've recently added support for logging
(https://codereview.chromium.org/2671713004/). Could you rebase and check
whether this part is still needed?

[dvallet, 2017/02/10 05:29:49]

Done. I think it should be working.

[dvallet, 2017/02/13 00:50:34]

I've cheked is working in Windows. Though I had to enable logging always for
Windows by default

+  PathService::Get(base::DIR_EXE, &log_filename);
+  log_filename = log_filename.AppendASCII("headless_shell.log");
+  logging::LoggingSettings settings;
+  settings.logging_dest = logging::LOG_TO_ALL;
+  settings.log_file = log_filename.value().c_str();
+  settings.delete_old = logging::DELETE_OLD_LOG_FILE;
+  logging::InitLogging(settings);
+  logging::SetLogItems(true, true, true, true);
+}
+
 int main(int argc, const char** argv) {
+  base::CommandLine::Init(argc, argv);
+  InitLogging();
+
   return headless::HeadlessShellMain(argc, argv);
 }