headless: Remove references to nonexistent headers

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 135 matching lines @@
   "network",
   "page",
   "profiler",
   "runtime",
   "security",
   "service_worker",
   "target",
   "tracing",
 ]
 
-generated_devtools_api = [
-  "$target_gen_dir/public/domains/types.h",
-  "$target_gen_dir/public/domains/type_conversions.h",
-]
+generated_devtools_api = []
 foreach(domain, devtools_domains) {
   generated_devtools_api += [
-    "$target_gen_dir/public/domains/" + domain + ".h",
     "$target_gen_dir/public/devtools/domains/" + domain + ".cc",
     "$target_gen_dir/public/devtools/domains/" + domain + ".h",
     "$target_gen_dir/public/devtools/domains/types_" + domain + ".h",
     "$target_gen_dir/public/devtools/domains/types_" + domain + ".cc",
     "$target_gen_dir/public/devtools/internal/type_conversions_" + domain +
         ".h",
     "$target_gen_dir/public/devtools/internal/" +
         "types_forward_declarations_" + domain + ".h",
   ]
 }
@@ skipping 372 matching lines @@
 
 executable("headless_example") {
   sources = [
     "app/headless_example.cc",
   ]
 
   deps = [
     "//headless:headless_shell_lib",
   ]
 }