win: build fixes

crypto/BUILD.gn

 # Copyright (c) 2013 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.
 
 import("//build/config/crypto.gni")
 
 component("crypto") {
   output_name = "crcrypto"  # Avoid colliding with OpenSSL's libcrypto.
   sources = [
     "apple_keychain.h",
@@ skipping 106 matching lines @@
     sources -= [
       "capi_util.cc",
       "capi_util.h",
     ]
   }
 
   if (is_android) {
     deps += [ "//third_party/android_tools:cpu_features" ]
   }
 
+  if (is_win) {
+    # TODO(jschuh): crbug.com/167187 fix size_t to int truncations.
+    cflags = [ "/wd4267" ]
+  }
+
   if (use_openssl) {
     # Remove NSS files when using OpenSSL
     sources -= [
       "ec_private_key_nss.cc",
       "ec_signature_creator_nss.cc",
       "encryptor_nss.cc",
       "hmac_nss.cc",
       "nss_util.cc",
       "nss_util.h",
       "nss_util_internal.h",
@@ skipping 165 matching lines @@
       ]
     } else {
       # Non-Linux platforms use the hermetic NSS from the tree.
       deps += [
         "//third_party/nss:nspr",
         "//third_party/nss:nss",
       ]
     }
   }
 }