Refactor language detection logic to allow non-static CLD data sources.

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 90 matching lines @@
 if (is_android) {
   safe_browsing_mode = 2
 } else if (is_ios) {
   safe_browsing_mode = 0
 } else {
   safe_browsing_mode = 1
 }
 
 enable_configuration_policy = true
 
-# The data acquisition mode for CLD2. Possible values are:
-#   static:     CLD2 data is statically linked to the executable.
-#   standalone: CLD2 data is provided in a standalone file that is
-#               bundled with the executable.
-#   component:  CLD2 data is provided as a Chrome "component" and is
-#               downloaded via the component updater.
-#
-# For more information on switching the CLD2 data source, see:
-#   https://sites.google.com/a/chromium.org/dev/developers/how-tos/compact-language-detector-cld-data-source-configuration
-cld2_data_source = "static"
-
 # Enables support for background apps.
 enable_background = !is_ios && !is_android
 
 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.
@@ skipping 35 matching lines @@
 # 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