[Mac/GN] Add missing -Wglobal-constructors to //third_party/WebKit.

third_party/WebKit/Source/modules/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("//third_party/WebKit/Source/bindings/bindings.gni")
 import("//third_party/WebKit/Source/bindings/modules/v8/generated.gni")
 import("//third_party/WebKit/Source/bindings/modules/v8/v8.gni")
 import("//third_party/WebKit/Source/build/scripts/scripts.gni")
 import("//third_party/WebKit/Source/modules/modules.gni")
 
@@ skipping 29 matching lines @@
     sources -= [ "webdatabase/sqlite/SQLiteFileSystemWin.cpp" ]
   }
   if (!is_posix) {
     sources -= [ "webdatabase/sqlite/SQLiteFileSystemPosix.cpp" ]
   }
 
   configs += [
     # TODO(jschuh): crbug.com/167187 fix size_t to int truncations.
     "//build/config/compiler:no_size_t_to_int_warning",
     "//third_party/WebKit/Source:config",
+    "//third_party/WebKit/Source:non_test_config",
     "//third_party/WebKit/Source:inside_blink",
   ]
 
   defines = [ "BLINK_MODULES_IMPLEMENTATION=1" ]
 
   deps = [
     ":make_modules_generated",
     "//device/battery:mojo_bindings_blink",
     "//device/nfc:mojo_bindings_blink",
     "//device/usb/public/interfaces:interfaces_blink",
@@ skipping 56 matching lines @@
 }
 
 # GYP version: WebKit/Source/modules/modules_generated.gyp:make_modules_generated
 group("make_modules_generated") {
   public_deps = [
     ":module_names",
     "//third_party/WebKit/Source/bindings/modules:bindings_modules_generated",
     "//third_party/WebKit/Source/core:core_event_interfaces",
   ]
 }