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

build/common.gypi

Index: build/common.gypi
diff --git a/build/common.gypi b/build/common.gypi
index 5a2753f08af3172e7c9d25e2efb04e6479d74aad..a8cf87364e03afe1926ede42f35f96a73ea14c6f 100644
--- a/build/common.gypi
+++ b/build/common.gypi
@@ -1217,6 +1217,11 @@
     # remaining.
     'win_third_party_warn_as_error%': 'true',
 
+    # Force /SUBSYSTEM:CONSOLE for some executables that use /SUBSYSTEM:WINDOWS
+    # by default. This should simplify debugging since windowed applications
+    # don't play well with stdout/stderr.
+    'win_force_console%': '0',

[scottmg, 2014/06/05 18:17:42]

could you make this win_force_console_subsystem to match the define please?

+
     # Clang stuff.
     'clang%': '<(clang)',
     'make_clang_dir%': 'third_party/llvm-build/Release+Asserts',
@@ -1828,6 +1833,9 @@
           }],
           ['asan==1', {
             'win_use_allocator_shim%': 0,
+            # The AddressSanitizer build should be a console program
+            # as it prints out stuff on stderr.
+            'win_force_console%': '1',
           }],
           ['component=="shared_library" and "<(GENERATOR)"=="ninja"', {
             # Only enabled by default for ninja because it's buggy in VS.
@@ -2612,6 +2620,11 @@
           '<(DEPTH)/third_party/wtl/include',
         ],
         'conditions': [
+          ['win_force_console!=0', {
+            'defines': [
+              "FORCE_CONSOLE_SUBSYSTEM",
+            ],
+          }],
           ['win_z7!=0', {
             'msvs_settings': {
               # Generates debug info when win_z7=1