Add a win_force_console=1 GYP flag that makes chrome.exe and nacl64.exe console applications

chrome/nacl/nacl_exe_win_64.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 "base/at_exit.h"
 #include "base/command_line.h"
 #include "base/lazy_instance.h"
 #include "chrome/app/chrome_breakpad_client.h"
 #include "components/breakpad/app/breakpad_win.h"
 #include "components/nacl/loader/nacl_helper_win_64.h"
 #include "content/public/common/content_switches.h"
 
 namespace {
 
 base::LazyInstance<chrome::ChromeBreakpadClient>::Leaky
     g_chrome_breakpad_client = LAZY_INSTANCE_INITIALIZER;
 
 } // namespace
 
-int APIENTRY wWinMain(HINSTANCE instance, HINSTANCE, wchar_t*, int) {
+#if !defined(FORCE_CONSOLE_SUBSYSTEM)
+int APIENTRY wWinMain(HINSTANCE, HINSTANCE, wchar_t*, int) {
+#else
+int main() {
+#endif
   base::AtExitManager exit_manager;
   CommandLine::Init(0, NULL);
 
   std::string process_type =
       CommandLine::ForCurrentProcess()->GetSwitchValueASCII(
           switches::kProcessType);
   breakpad::SetBreakpadClient(g_chrome_breakpad_client.Pointer());
   breakpad::InitCrashReporter(process_type);
 
   return nacl::NaClWin64Main();
 }