Make intsafe.h workaround global

ash/ash.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,
     'grit_out_dir': '<(SHARED_INTERMEDIATE_DIR)/chrome',
   },
   'includes': [
@@ skipping 657 matching lines @@
             '../ipc/ipc.gyp:ipc',
             '../ui/metro_viewer/metro_viewer.gyp:metro_viewer_messages',
             '../win8/win8.gyp:metro_viewer',
             '../win8/win8.gyp:test_support_win8',
             '../win8/win8_tests.gyp:test_registrar',
           ],
           'sources': [
             'test/test_metro_viewer_process_host.cc',
             'test/test_metro_viewer_process_host.h',
           ],
-          'msvs_settings': {
-            'VCCLCompilerTool': {
-              'ForcedIncludeFiles': [ 'build/intsafe_workaround.h' ],
-            },
-          },
         }],
       ],
     },
     {
       'target_name': 'ash_unittests',
       'type': 'executable',
       'dependencies': [
         '../base/base.gyp:base',
         '../base/base.gyp:test_support_base',
         '../chrome/chrome_resources.gyp:packed_resources',
@@ skipping 262 matching lines @@
             },
           },
           'dependencies': [
             '../sandbox/sandbox.gyp:sandbox',
           ],
         }],
       ],
     },
   ],
 }