GN chrome/common build, rename enable_printing.

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 38 matching lines @@
 # Enable the spell checker.
 enable_spellcheck = !is_android
 
 enable_pepper_cdms = enable_plugins && (is_linux || is_mac || is_win)
 
 # Enable printing support and UI. This variable is used to configure which
 # parts of printing will be built. 0 disables printing completely, 1 enables it
 # fully, and 2 enables only the codepath to generate a Metafile (e.g.  usually
 # a PDF or EMF) and disables print preview, cloud print, UI, etc.
 if (is_android) {
-  enable_printing = 2
+  printing_mode = 2
 } else {
-  enable_printing = 1
+  printing_mode = 1
 }
 
 # 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) &&
   (cpu_arch == "x86" || cpu_arch == "x64" || cpu_arch == "arm")
 
 enable_webrtc = !is_ios
@@ skipping 80 matching lines @@
 enable_google_now = !is_ios && !is_android
 
 enable_one_click_signin = is_win || is_mac || (is_linux && !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