Move printing defines to buildflag system.

chrome/common/BUILD.gn

 # 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.
 
 import("//build/buildflag_header.gni")
 import("//build/util/process_version.gni")
 import("//chrome/common/features.gni")
 import("//chrome/process_version_rc_template.gni")  # For branding_file_path.
 import("//mojo/public/tools/bindings/mojom.gni")
 import("//tools/grit/grit_rule.gni")
@@ skipping 204 matching lines @@
     "//gin",
     "//google_apis",
     "//gpu/command_buffer/service",
     "//gpu/config",
     "//ipc",
     "//media",
     "//mojo/edk/system",
     "//mojo/public/cpp/bindings",
     "//net",
     "//ppapi/features",
+    "//printing/features",
     "//skia",
     "//third_party/icu",
     "//third_party/kasko:kasko_features",
     "//third_party/re2",
     "//third_party/widevine/cdm:headers",
     "//third_party/zlib:zip",
     "//ui/accessibility",
     "//ui/base",
     "//ui/gfx/ipc",
     "//ui/gfx/ipc/geometry",
@@ skipping 328 matching lines @@
     "env_vars.h",
     "pref_font_script_names-inl.h",
     "pref_font_webkit_names.h",
     "pref_names.cc",
     "pref_names.h",
   ]
 
   public_deps = [
     ":features",
     "//content/public/common:result_codes",
+    "//printing/features",
   ]
   deps = [
     ":version_header",
     "//base",
     "//base/third_party/dynamic_annotations",
     "//components/bookmarks/common",
     "//components/nacl/common:switches",
     "//media:cdm_paths",  # Needed by chrome_paths.cc.
     "//ppapi/features",
     "//third_party/widevine/cdm:headers",
@@ skipping 86 matching lines @@
     "shell_handler_win.mojom",
   ]
 
   public_deps = [
     "//skia/public/interfaces",
     "//url/mojo:url_mojom_gurl",
   ]
 
   use_new_wrapper_types = false
 }