gn win: disable 4267 (need for win x64)

base/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/ui.gni")
 
 if (is_android) {
   import("//build/config/android/rules.gni")
 }
 
@@ skipping 840 matching lines @@
     sources -= [
       "event_recorder_stubs.cc",
       "message_loop/message_pump_libevent.cc",
       "strings/string16.cc",
       # Not using sha1_win.cc because it may have caused a
       # regression to page cycler moz.
       "sha1_win.cc",
     ]
 
     # TODO(jschuh): crbug.com/167187 fix size_t to int truncations.
-    #cflags = [ "/wd4267" ]
+    cflags = [ "/wd4267" ]
 
     libs = [
       "cfgmgr32.lib",
       "netapi32.lib",
       "powrprof.lib",
       "setupapi.lib",
     ]
     ldflags = [
       "/DELAYLOAD:cfgmgr32.dll",
       "/DELAYLOAD:powrprof.dll",
@@ skipping 137 matching lines @@
   deps = [
     ":base",
     "//base/third_party/dynamic_annotations",
     "//third_party/icu",
   ]
 
   if (is_android && !is_debug) {
     configs -= [ "//build/config/compiler:optimize" ]
     configs += [ "//build/config/compiler:optimize_max" ]
   }
+
+  if (is_win) {
+    # TODO(jschuh): crbug.com/167187 fix size_t to int truncations.
+    cflags = [ "/wd4267" ]
+  }
 }
 
 source_set("prefs") {
   sources = [
     "prefs/base_prefs_export.h",
     "prefs/default_pref_store.cc",
     "prefs/default_pref_store.h",
     "prefs/json_pref_store.cc",
     "prefs/json_pref_store.h",
     "prefs/overlay_user_pref_store.cc",
@@ skipping 471 matching lines @@
   # GYP: //base.gyp:base_unittests_apk
   unittest_apk("base_unittests_apk") {
     deps = [
       ":base_java",
       ":base_java_unittest_support",
       ":base_unittests",
     ]
     unittests_dep = ":base_unittests"
   }
 }