Minimize headless code that refers to aura.

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("//mojo/public/tools/bindings/mojom.gni")
 import("//testing/test.gni")
 import("//tools/grit/grit_rule.gni")
 import("//tools/grit/repack.gni")
@@ skipping 189 matching lines @@
               "lib/browser/headless_content_browser_client.cc",
               "lib/browser/headless_content_browser_client.h",
               "lib/browser/headless_devtools.cc",
               "lib/browser/headless_devtools.h",
               "lib/browser/headless_devtools_client_impl.cc",
               "lib/browser/headless_devtools_client_impl.h",
               "lib/browser/headless_devtools_manager_delegate.cc",
               "lib/browser/headless_devtools_manager_delegate.h",
               "lib/browser/headless_platform_event_source.cc",
               "lib/browser/headless_platform_event_source.h",
-              "lib/browser/headless_screen.cc",
-              "lib/browser/headless_screen.h",
               "lib/browser/headless_url_request_context_getter.cc",
               "lib/browser/headless_url_request_context_getter.h",
               "lib/browser/headless_web_contents_impl.cc",
               "lib/browser/headless_web_contents_impl.h",
-              "lib/browser/headless_window_parenting_client.cc",
-              "lib/browser/headless_window_parenting_client.h",
-              "lib/browser/headless_window_tree_host.cc",
-              "lib/browser/headless_window_tree_host.h",
               "lib/headless_content_client.cc",
               "lib/headless_content_client.h",
               "lib/headless_content_main_delegate.cc",
               "lib/headless_content_main_delegate.h",
               "public/headless_browser.cc",
               "public/headless_browser.h",
               "public/headless_browser_context.h",
               "public/headless_devtools_client.h",
               "public/headless_devtools_host.h",
               "public/headless_devtools_target.h",
@@ skipping 28 matching lines @@
               "public/util/navigation_request.h",
               "public/util/testing/generic_url_request_mocks.cc",
               "public/util/testing/generic_url_request_mocks.h",
               "public/util/url_fetcher.cc",
               "public/util/url_fetcher.h",
               "public/util/url_request_dispatcher.h",
               "public/util/user_agent.cc",
               "public/util/user_agent.h",
             ]
 
+  if (use_aura) {
+    sources += [
+      "lib/browser/headless_browser_impl_aura.cc",
+      "lib/browser/headless_screen.cc",
+      "lib/browser/headless_screen.h",
+      "lib/browser/headless_window_parenting_client.cc",
+      "lib/browser/headless_window_parenting_client.h",
+      "lib/browser/headless_window_tree_host.cc",
+      "lib/browser/headless_window_tree_host.h",
+    ]
+  }
+
   deps = [
     ":gen_devtools_client_api",
     "//base",
     "//components/security_state/content",
     "//components/security_state/core",
     "//content/public/app:both",
     "//content/public/browser",
     "//content/public/common",
     "//content/public/common:service_names",
     "//net",
@@ skipping 157 matching lines @@
   sources = [
     "app/headless_shell_main.cc",
   ]
 
   deps = [
     "//headless:headless_shell_lib",
   ]
 
   configs += [ ":headless_implementation" ]
 }