Drop support for Compact Language Detector v1.

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,
@@ skipping 102 matching lines @@
   # Enable basic printing support and UI.
   enable_basic_printing = !is_chromeos && !is_chromecast && !is_ios
 
   # 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 && !is_chromecast && !is_ios
 }
 
 # Additional dependent variables -----------------------------------------------
 
-# Set the version of CLD.
-#   1: (DEPRECATED! See http://crbug.com/528305 for info) Use only CLD1.
-#   2: Use only CLD2.
-cld_version = 2
-
 # Enable the spell checker.
 enable_spellcheck = !is_ios
 
 # Use the operating system's spellchecker rather than hunspell.
 use_browser_spellchecker = is_android || is_mac
 
 # Enables the use of CDMs in pepper plugins.
 enable_pepper_cdms =
     enable_plugins && (is_linux || is_mac || is_win) && !is_chromecast
 
@@ skipping 32 matching lines @@
 enable_chromevox_next = false
 
 # Use brlapi from brltty for braille display support.
 use_brlapi = is_chromeos
 
 # Enable WebVR support by default on Android
 # Still requires command line flag to access API
 enable_webvr = is_android
 
 enable_configuration_policy = !is_ios