Make installer_util_unittests build on Win64

chrome/chrome_installer.gypi

 # 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': {
     'lastchange_path': '../build/util/LASTCHANGE',
     # 'branding_dir' is set in the 'conditions' section at the bottom.
   },
   'conditions': [
@@ skipping 120 matching lines @@
             'installer/util/shell_util_unittest.cc',
             'installer/util/wmi_unittest.cc',
             'installer/util/work_item_list_unittest.cc',
             '<(SHARED_INTERMEDIATE_DIR)/chrome_version/other_version.rc',
           ],
           'msvs_settings': {
             'VCManifestTool': {
               'AdditionalManifestFiles': '$(ProjectDir)\\installer\\mini_installer\\mini_installer.exe.manifest',
             },
           },
+          # TODO(jschuh): crbug.com/167187 fix size_t to int truncations.
+          'msvs_disabled_warnings': [ 4267, ],          
         },
         {
           'target_name': 'installer_util_strings',
           'type': 'none',
           'rules': [
             {
               'rule_name': 'installer_util_strings',
               'extension': 'grd',
               'variables': {
                 'create_string_rc_py' : 'installer/util/prebuild/create_string_rc.py',
@@ skipping 1041 matching lines @@
          'branding_dir_100': 'app/theme/default_100_percent/google_chrome',
       },
     }, { # else branding!="Chrome"
       'variables': {
          'branding_dir': 'app/theme/chromium',
          'branding_dir_100': 'app/theme/default_100_percent/chromium',
       },
     }],
   ],
 }