gyp performance: don't invoke python to check dir existance

content/content.gyp

 # 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.
 
 {
   'variables': {
     'chromium_code': 1,  # Use higher warning level.
     'chromium_enable_vtune_jit_for_v8%': 0,  # enable the vtune support for V8 engine.
-    'directxsdk_exists': '<!(python <(DEPTH)/build/dir_exists.py ../third_party/directxsdk)',
+    'directxsdk_exists': '<!pymod_do_main(dir_exists ../third_party/directxsdk)',
   },
   'target_defaults': {
     'defines': ['CONTENT_IMPLEMENTATION'],
     'conditions': [
       # TODO(jschuh): Remove this after crbug.com/173851 gets fixed.
       ['OS=="win" and target_arch=="x64"', {
         'msvs_settings': {
           'VCCLCompilerTool': {
             'AdditionalOptions': ['/bigobj'],
           },
@@ skipping 551 matching lines @@
                   ],
                 },
               ],
             }],
           ],
         },
       ],
     }],  # OS == "android"
   ],
 }