[CUPS] Put the CUPS settings UI behind a command line flag --enable-native-cups.

chrome/browser/ui/webui/settings/md_settings_localized_strings_provider.cc

 // Copyright 2015 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.
 
 #include "chrome/browser/ui/webui/settings/md_settings_localized_strings_provider.h"
 
 #include <string>
 
 #include "base/command_line.h"
 #include "base/i18n/number_formatting.h"
@@ skipping 12 matching lines @@
 #include "components/google/core/browser/google_util.h"
 #include "components/password_manager/core/browser/password_manager_constants.h"
 #include "content/public/browser/web_ui_data_source.h"
 #include "grit/components_strings.h"
 #include "ui/base/l10n/l10n_util.h"
 
 #if defined(OS_CHROMEOS)
 #include "ash/common/system/chromeos/devicetype_utils.h"
 #include "chrome/browser/chromeos/profiles/profile_helper.h"
 #include "chrome/browser/ui/webui/chromeos/ui_account_tweaks.h"
+#include "chrome/common/chrome_switches.h"
 #include "chromeos/chromeos_switches.h"
 #include "components/user_manager/user.h"
 #include "components/user_manager/user_manager.h"
 #include "ui/chromeos/strings/grit/ui_chromeos_strings.h"
 #else
 #include "chrome/browser/ui/webui/settings/system_handler.h"
 #endif
 
 namespace settings {
 namespace {
@@ skipping 962 matching lines @@
     {"printerAddress", IDS_SETTINGS_PRINTING_CUPS_PRINTER_ADVANCED_ADDRESS},
     {"printerProtocol", IDS_SETTINGS_PRINTING_CUPS_PRINTER_ADVANCED_PROTOCOL},
 #endif
   };
   AddLocalizedStringsBulk(html_source, localized_strings,
                           arraysize(localized_strings));
 
   html_source->AddString("devicesUrl", chrome::kChromeUIDevicesURL);
   html_source->AddString("printingCloudPrintLearnMoreUrl",
                          chrome::kCloudPrintLearnMoreURL);
+
+#if defined(OS_CHROMEOS)
+  html_source->AddBoolean("showCupsPrintingFeatures",
+                          base::CommandLine::ForCurrentProcess()->HasSwitch(
+                              ::switches::kEnableNativeCups));
+#endif
 }
 
 void AddPrivacyStrings(content::WebUIDataSource* html_source) {
   LocalizedString localized_strings[] = {
       {"privacyPageTitle", IDS_SETTINGS_PRIVACY},
       {"linkDoctorPref", IDS_SETTINGS_LINKDOCTOR_PREF},
       {"searchSuggestPref", IDS_SETTINGS_SUGGEST_PREF},
       {"networkPredictionEnabled",
        IDS_SETTINGS_NETWORK_PREDICTION_ENABLED_DESCRIPTION},
       {"safeBrowsingEnableProtection",
@@ skipping 409 matching lines @@
 #endif
   AddUsersStrings(html_source);
   AddWebContentStrings(html_source);
 
   policy_indicator::AddLocalizedStrings(html_source);
 
   html_source->SetJsonPath(kLocalizedStringsFile);
 }
 
 }  // namespace settings