Fix windows pdfium_use_skia build.

third_party/third_party.gyp

 # Copyright 2014 PDFium 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': {
     'pdf_enable_xfa%': 0,  # Set to 1 by standalone.gypi in standalone builds.
   },
   'target_defaults': {
     'defines': [
@@ skipping 309 matching lines @@
         'zlib_v128/uncompr.c',
         'zlib_v128/zutil.c',
       ],
       'conditions': [
         ['os_posix==1', {
           'cflags': [
             # TODO(dsinclair): Remove if fixed upstream. https://crbug.com/507712
             '-Wno-shift-negative-value',
           ],
         }],
+        ['OS == "win"', {
+          'direct_dependent_settings': {
+            'include_dirs': [
+              'zlib_v128',
+            ],
+          }
+        }],
       ],
       'variables': {
         'clang_warning_flags': [
           # Avoid warning for undefined behaviour. https://crbug.com/507712
           '-Wno-shift-negative-value',
         ]
       },
     },
     {
       'target_name': 'pdfium_base',
@@ skipping 52 matching lines @@
             'libtiff/tif_version.c',
             'libtiff/tif_warning.c',
             'libtiff/tif_write.c',
             'libtiff/tif_zip.c',
           ],
         },
       ],
     }],
   ],
 }