Update existing uses of /wd4267 to use the GN config

content/renderer/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.
 
 import("//build/config/features.gni")
 import("//build/config/ui.gni")
 import("//content/renderer/renderer.gni")
 import("//media/media_options.gni")
 
 source_set("renderer") {
   # Only the public target should depend on this. All other targets (even
   # internal content ones) should depend on the public one.
   visibility = [ "//content/public/renderer:renderer_sources" ]
 
   sources = rebase_path(content_renderer_gypi_values.private_renderer_sources,
                         ".",
                         "//content")
 
-  configs += [ "//content:content_implementation" ]
+  configs += [
+    "//content:content_implementation",
+    "//build/config/compiler:no_size_t_to_int_warning",
+  ]
 
   deps = [
     # TODO(GYP) bug 376846 remove this. This should be inherited from //net but
     # those don't cross component boundaries.
     "//crypto:platform",
     "//base/allocator",
     "//cc",
     "//cc/blink",
     "//content:resources",
     "//content/common:mojo_bindings",
@@ skipping 159 matching lines @@
   }
 
   if (enable_media_mojo_renderer) {
     sources += [
       "media/media_renderer_service_provider.cc",
       "media/media_renderer_service_provider.h",
     ]
     deps += [ "//media/mojo/services:renderer_proxy" ]
   }
 }