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

chrome/chrome_exe.gypi

 # 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.
 
 {
   'targets': [
     {
       'target_name': 'chrome',
       'type': 'none',
       'dependencies': [ 'chrome_initial', ],
@@ skipping 500 matching lines @@
               'OutputFile': '$(OutDir)\\initialexe\\chrome.exe',
               'DelayLoadDLLs': [
                 'dbghelp.dll',
                 'dwmapi.dll',
                 'uxtheme.dll',
                 'ole32.dll',
                 'oleaut32.dll',
               ],
               'AdditionalDependencies': [ 'wintrust.lib' ],
               'conditions': [
-                ['asan==0', {
-                  # Set /SUBSYSTEM:WINDOWS for chrome.exe itself, except for the
-                  # AddressSanitizer build where console output is important.
+                ['win_force_console==0', {
                   'SubSystem': '2',
                 }],
               ],
             },
             'VCManifestTool': {
               'AdditionalManifestFiles': [
                 '$(ProjectDir)\\app\\chrome.exe.manifest',
                 '<(SHARED_INTERMEDIATE_DIR)/chrome/app/version_assembly/version_assembly.manifest',
               ],
             },
@@ skipping 107 matching lines @@
               'defines': [
                 '<@(nacl_win64_defines)',
                 'COMPILE_CONTENT_STATICALLY',
               ],
               'include_dirs': [
                 '<(SHARED_INTERMEDIATE_DIR)/chrome',
               ],
               'msvs_settings': {
                 'VCLinkerTool': {
                   'ImportLibrary': '$(OutDir)\\lib\\nacl64_exe.lib',
-                  'SubSystem': '2',         # Set /SUBSYSTEM:WINDOWS
+                  'conditions': [
+                    ['win_force_console==0', {
+                      'SubSystem': '2',         # Set /SUBSYSTEM:WINDOWS
+                    }],
+                  ],
                 },
               },
               'configurations': {
                 'Common_Base': {
                   'msvs_target_platform': 'x64',
                 },
               },
               'conditions': [
                 ['configuration_policy==1', {
                   'dependencies': [
@@ skipping 34 matching lines @@
               'dependencies': [
                 'chrome_nacl_win64',
               ],
             }],
           ],
         },
       ],
     }],
   ],
 }