Add lots of GN targets

build/config/features.gni

 # 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.
 
 # This file contains UI-related build flags. It should theoretically be in the
 # src/ui directory and only things that depend on the ui module should get the
 # definitions.
 #
 # However, today we have many "bad" dependencies on some of these flags from,
 # e.g. base, so they need to be global.
@@ skipping 113 matching lines @@
 # Android stores them separately on the Java side.
 enable_session_service = !is_android && !is_ios
 
 # Whether we are using the rlz library or not.  Platforms like Android send
 # rlz codes for searches but do not use the library.
 enable_rlz = is_chrome_branded && (is_win || is_mac || is_ios || is_chromeos)
 
 enable_plugin_installation = is_win || is_mac
 
 enable_app_list = !is_ios && !is_android
+enable_settings_app = enable_app_list && !is_chromeos
 
 enable_managed_users = !is_ios
 
 enable_service_discovery = enable_mdns || is_mac
 
 enable_autofill_dialog = !is_ios && !(is_android && is_android_webview_build)
 
 enable_wifi_bootstrapping = is_win || is_mac
+
+# Image loader extension is enabled on ChromeOS only.
+enable_image_loader_extension = is_chromeos
+
+enable_remoting = !is_ios && !is_android
+
+enable_google_now = !is_ios && !is_android