Shard modules target when using win_z7

R=enne@chromium.org

Review URL: https://codereview.chromium.org/1288093005

git-svn-id: svn://svn.chromium.org/blink/trunk@200888 bbb929c8-8fbe-4397-9dbb-9b2b20218538

third_party/WebKit/Source/modules/modules.gyp

@@ -80,7 +80,7 @@
         ],
         '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,
           }],
         ],