Shard modules target when using win_z7

Source/modules/modules.gyp

 #
 # Copyright (C) 2013 Google Inc. All rights reserved.
 #
 # Redistribution and use in source and binary forms, with or without
 # modification, are permitted provided that the following conditions are
 # met:
 #
 #     * Redistributions of source code must retain the above copyright
 # notice, this list of conditions and the following disclaimer.
 #     * Redistributions in binary form must reproduce the above
@@ skipping 62 matching lines @@
           '<(DEPTH)/url/url.gyp:url_lib',
           '<(DEPTH)/v8/tools/gyp/v8.gyp:v8',
         ],
       }, {
         'type': 'static_library',
         'dependencies': [
           '../core/core.gyp:webcore',
         ],
         'conditions': [
           # Shard this target into parts to work around linker limitations.
-          ['OS=="win" and buildtype=="Official"', {
+          ['OS=="win" and (buildtype=="Official" or (fastbuild==0 and win_z7==1))', {
             'msvs_shard': 4,
           }],
         ],
       }]
     ],
     # Disable c4267 warnings until we fix size_t to int truncations.
     'msvs_disabled_warnings': [ 4267, 4334, ],
   },
   {
     # GN version: //third_party/WebKit/Source/modules:modules_testing
@@ skipping 18 matching lines @@
           '<(DEPTH)/gin/gin.gyp:gin',
         ],
       }, {
         'dependencies': [
           '../core/core.gyp:webcore',
         ],
       }],
     ],
   }],
 }