Update existing uses of /wd4267 to use the GN config

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")
 import("//testing/test.gni")
 
 component("crypto") {
   output_name = "crcrypto"  # Avoid colliding with OpenSSL's libcrypto.
   sources = [
@@ skipping 75 matching lines @@
     "third_party/nss/chromium-blapi.h",
     "third_party/nss/chromium-blapit.h",
     "third_party/nss/chromium-nss.h",
     "third_party/nss/chromium-sha256.h",
     "third_party/nss/pk11akey.cc",
     "third_party/nss/rsawrapr.c",
     "third_party/nss/secsign.cc",
     "third_party/nss/sha512.cc",
   ]
 
+  # TODO(jschuh): crbug.com/167187 fix size_t to int truncations.
+  configs += [ "//build/config/compiler:no_size_t_to_int_warning" ]
+
   deps = [
     ":platform",
     "//base",
     "//base/third_party/dynamic_annotations",
   ]
 
   if (!is_mac && !is_ios) {
     sources -= [
       "apple_keychain.h",
       "mock_apple_keychain.cc",
@@ skipping 13 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 172 matching lines @@
       ]
     } else {
       # Non-Linux platforms use the hermetic NSS from the tree.
       deps += [
         "//third_party/nss:nspr",
         "//third_party/nss:nss",
       ]
     }
   }
 }