Make common_net build on Win64

chrome/chrome_common.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.
 
 {
   'targets': [
     {
       'target_name': 'common',
       'type': 'static_library',
       'variables': {
@@ skipping 604 matching lines @@
             'sources!': [
               'common/net/x509_certificate_model_nss.cc',
             ],
           },
           {  # else !use_openssl: remove the unneeded files
             'sources!': [
               'common/net/x509_certificate_model_openssl.cc',
             ],
           },
         ],
+        ['OS=="win"', {
+            # TODO(jschuh): crbug.com/167187 fix size_t to int truncations.
+            'msvs_disabled_warnings': [4267, ],
+          },
+        ],
       ],
     },
     {
       # Protobuf compiler / generator for the safebrowsing client
       # model proto and the client-side detection (csd) request
       # protocol buffer.
       'target_name': 'safe_browsing_proto',
       'type': 'static_library',
       'sources': [
         'common/safe_browsing/client_model.proto',
@@ skipping 19 matching lines @@
         'common/metrics/proto/user_action_event.proto',
       ],
       'variables': {
         'proto_in_dir': 'common/metrics/proto',
         'proto_out_dir': 'chrome/common/metrics/proto',
       },
       'includes': [ '../build/protoc.gypi' ],
     },
   ],
 }