Starting work on full GN build

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 Chrome-feature-related build flags (see ui.gni for
-# UI-related ones). These should theoretically be moved to the build files of
-# the features themselves.
-#
-# However, today we have many "bad" dependencies on some of these flags from,
-# e.g. base, so they need to be global to match the GYP configuration. Also,
-# anything that needs a grit define must be in either this file or ui.gni.
-#
-# PLEASE TRY TO AVOID ADDING FLAGS TO THIS FILE in cases where grit isn't
-# required. See the declare_args block of BUILDCONFIG.gn for advice on how
-# to set up feature flags.
-
-import("//build/config/chrome_build.gni")
-if (is_android) {
-  import("//build/config/android/config.gni")
-}
-
-declare_args() {
-  # Multicast DNS.
-  enable_mdns = is_win || is_linux
-
-  enable_plugins = !is_android && !is_ios
-
-  # Enables Native Client support.
-  # TODO(GYP): Get NaCl linking on other platforms.
-  # Also, see if we can always get rid of enable_nacl_untrusted and
-  # enable_pnacl and always build them if enable_nacl is true.
-  # The "is_nacl" part of the condition is needed to ensure that
-  # the untrusted code is built properly; arguably it should be
-  # guarded by "is_nacl" directly rather than enable_nacl_untrusted, but
-  # this will go away when Mac and Win are working and we can just use
-  # the commented out logic.
-  # Eventually we want this to be:
-  #   enable_nacl = !is_ios && !is_android
-  enable_nacl = (is_linux && !is_chromeos && current_cpu == "x64") || is_nacl
-  enable_nacl_untrusted = enable_nacl
-  enable_pnacl = enable_nacl_untrusted
-
-  # If debug_devtools is set to true, JavaScript files for DevTools are stored
-  # as is and loaded from disk. Otherwise, a concatenated file is stored in
-  # resources.pak. It is still possible to load JS files from disk by passing
-  # --debug-devtools cmdline switch.
-  debug_devtools = false
-
-  # Enables WebRTC.
-  # TODO(GYP) make mac and android work.
-  enable_webrtc = !is_ios && !is_mac && !is_android
-
-  # Enables the Media Router.
-  enable_media_router = !is_ios && !is_android
-
-  # Enables proprietary codecs and demuxers; e.g. H264, MOV, AAC, and MP3.
-  # Android OS includes support for proprietary codecs regardless of building
-  # Chromium or Google Chrome. We also ship Google Chrome and Chromecast with
-  # proprietary codecs.
-  # TODO(GYP) The GYP build has || chromecast==1 for this:
-  proprietary_codecs = is_android || is_chrome_branded
-
-  enable_configuration_policy = true
-
-  # Enables support for background apps.
-  enable_background = !is_ios && !is_android
-
-  enable_captive_portal_detection = !is_android && !is_ios
-
-  # Enables use of the session service, which is enabled by default.
-  # Android stores them separately on the Java side.
-  enable_session_service = !is_android && !is_ios
-
-  enable_plugin_installation = is_win || is_mac
-
-  enable_app_list = !is_ios && !is_android
-
-  enable_supervised_users = !is_ios
-
-  enable_autofill_dialog = !is_ios
-
-  enable_google_now = !is_ios && !is_android
-
-  enable_one_click_signin = is_win || is_mac || (is_linux && !is_chromeos)
-
-  enable_remoting = !is_ios && !is_android
-
-  # Enable hole punching for the protected video.
-  enable_video_hole = is_android
-
-  # Enables browser side Content Decryption Modules. Required for embedders
-  # (e.g. Android and ChromeCast) that use a browser side CDM.
-  enable_browser_cdms = is_android
-
-  # Variable safe_browsing is used to control the build time configuration
-  # for safe browsing feature. Safe browsing can be compiled in 4 different
-  # levels: 0 disables it, 1 enables it fully, and 2 enables only UI and
-  # reporting features for use with Data Saver on Mobile, and 3 enables
-  # extended mobile protection via an external API.  When 3 is fully deployed,
-  # it will replace 2.
-  if (is_android) {
-    safe_browsing_mode = 2
-  } else if (is_ios) {
-    safe_browsing_mode = 0
-  } else {
-    safe_browsing_mode = 1
-  }
-}
-
-# Additional dependent variables -----------------------------------------------
-
-# Set the version of CLD.
-#   0: Don't specify the version. This option is for the Finch testing.
-#   1: Use only CLD1.
-#   2: Use only CLD2.
-if (is_android) {
-  cld_version = 1
-} else {
-  cld_version = 2
-}
-
-# libudev usage. This currently only affects the content layer.
-use_udev = is_linux
-
-# Enable the spell checker.
-enable_spellcheck = !is_android
-
-# Use the operating system's spellchecker rather than hunspell.
-use_platform_spellchecker = is_android || is_mac
-
-enable_pepper_cdms = enable_plugins && (is_linux || is_mac || is_win)
-
-# Enable basic printing support and UI.
-enable_basic_printing = !is_chromeos
-
-# Enable printing with print preview. It does not imply
-# enable_basic_printing. It's possible to build Chrome with preview only.
-enable_print_preview = !is_android
-
-# The seccomp-bpf sandbox is only supported on three architectures
-# currently.
-# Do not disable seccomp_bpf anywhere without talking to
-# security@chromium.org!
-use_seccomp_bpf = (is_linux || is_android) &&
-                  (current_cpu == "x86" || current_cpu == "x64" ||
-                   current_cpu == "arm" || current_cpu == "mipsel")
-
-# Enable notifications everywhere except iOS.
-enable_notifications = !is_ios
-
-# TODO(brettw) this should be moved to net and only dependents get this define.
-disable_ftp_support = is_ios
-
-enable_web_speech = !is_android && !is_ios
-
-use_dbus = is_linux
-
-enable_extensions = !is_android && !is_ios
-
-enable_task_manager = !is_ios && !is_android
-
-use_cups = is_desktop_linux || is_mac
-
-enable_themes = !is_android && !is_ios
-
-# TODO(scottmg) remove this when we've fixed printing.
-win_pdf_metafile_for_printing = true
-
-# 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_support = is_win || is_mac || is_ios || is_chromeos
-enable_rlz = is_chrome_branded && enable_rlz_support
-
-enable_settings_app = enable_app_list && !is_chromeos
-
-enable_service_discovery = enable_mdns || is_mac
-
-enable_wifi_bootstrapping = is_win || is_mac
-
-# Image loader extension is enabled on ChromeOS only.
-enable_image_loader_extension = is_chromeos
-
-# Chrome OS: whether to also build the upcoming version of
-# ChromeVox, which can then be enabled via a command-line switch.
-enable_chromevox_next = false
-
-# Use brlapi from brltty for braille display support.
-use_brlapi = is_chromeos
-
-# Option controlling the use of GConf (the classic GNOME configuration
-# system).
-# TODO(GYP) also require !embedded to enable.
-use_gconf = is_linux && !is_chromeos
-
-# Hangout services is an extension that adds extra features to Hangouts.
-# For official GYP builds, this flag is set, it will likely need to be
-# parameterized in the future for a similar use.
-enable_hangout_services_extension = false
-
-# Whether to back up data before sync.
-enable_pre_sync_backup = is_win || is_mac || (is_linux && !is_chromeos)
-
-# WebVR support disabled until platform implementations have been added
-enable_webvr = false