Update existing uses of /wd4267 to use the GN config

remoting/protocol/BUILD.gn

 # Copyright 2014 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.
 
 static_library("protocol") {
   gypi_values = exec_script("//build/gypi_to_gn.py",
                             [ rebase_path("../remoting_srcs.gypi") ],
                             "scope",
                             [ "../remoting_srcs.gypi" ])
 
   sources =
       rebase_path(gypi_values.remoting_protocol_sources, ".", "//remoting")
 
-  configs += [ "//build/config/compiler:wexit_time_destructors" ]
+  configs += [
+    "//build/config/compiler:no_size_t_to_int_warning",
+    "//build/config/compiler:wexit_time_destructors",
+  ]
 
   public_deps = [
     "//third_party/libjingle",
   ]
   deps = [
     "//base",
     "//crypto",
     "//jingle:jingle_glue",
     "//jingle:notifier",
     "//net",
     "//remoting/base",
   ]
 }