Fix DCHECH errors on Windows

headless/BUILD.gn

 # Copyright 2015 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/chrome_build.gni")
 import("//headless/headless.gni")
 import("//build/util/process_version.gni")
 import("//mojo/public/tools/bindings/mojom.gni")
 import("//printing/features/features.gni")
 import("//testing/test.gni")
@@ skipping 605 matching lines @@
 }
 
 executable("headless_shell") {
   sources = [
     "app/headless_shell_main.cc",
   ]
 
   deps = [
     ":headless_shell_lib",
   ]
+
+  if (is_win) {
+    deps += [ "//build/win:default_exe_manifest" ]
+  }
 }
 
 process_version("version_header") {
   template_file = "public/version.h.in"
   sources = [
     "//build/util/LASTCHANGE",
     "//chrome/VERSION",
   ]
   output = "$target_gen_dir/public/version.h"
 }
 
 executable("headless_example") {
   sources = [
     "app/headless_example.cc",
   ]
 
   deps = [
     ":headless_shell_lib",
   ]
 }