Make enable_service_discovery a chrome/ feature.

chrome/browser/prefs/browser_prefs.cc

 // Copyright 2012 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/prefs/browser_prefs.h"
 
 #include <string>
 
 #include "base/files/file_util.h"
 #include "base/metrics/histogram_macros.h"
@@ skipping 125 matching lines @@
 #endif
 
 #if defined(ENABLE_SUPERVISED_USERS)
 #include "chrome/browser/supervised_user/child_accounts/child_account_service.h"
 #include "chrome/browser/supervised_user/legacy/supervised_user_shared_settings_service.h"
 #include "chrome/browser/supervised_user/legacy/supervised_user_sync_service.h"
 #include "chrome/browser/supervised_user/supervised_user_service.h"
 #include "chrome/browser/supervised_user/supervised_user_whitelist_service.h"
 #endif
 
-#if defined(ENABLE_SERVICE_DISCOVERY)
+#if BUILDFLAG(ENABLE_SERVICE_DISCOVERY)
 #include "chrome/browser/ui/webui/local_discovery/local_discovery_ui.h"
 #endif
 
 #if BUILDFLAG(ANDROID_JAVA_UI)
 #include "chrome/browser/android/bookmarks/partner_bookmarks_shim.h"
 #include "chrome/browser/android/ntp/new_tab_page_prefs.h"
 #include "components/ntp_tiles/most_visited_sites.h"
 #include "components/ntp_tiles/popular_sites.h"
 #else
 #include "chrome/browser/ui/startup/startup_browser_creator.h"
@@ skipping 375 matching lines @@
 #endif
 
 #if defined(ENABLE_PLUGINS)
   PluginsUI::RegisterProfilePrefs(registry);
 #endif
 
 #if defined(ENABLE_PRINT_PREVIEW)
   printing::StickySettings::RegisterProfilePrefs(registry);
 #endif
 
-#if defined(ENABLE_SERVICE_DISCOVERY)
+#if BUILDFLAG(ENABLE_SERVICE_DISCOVERY)
   LocalDiscoveryUI::RegisterProfilePrefs(registry);
 #endif
 
 #if defined(ENABLE_SUPERVISED_USERS)
 #if !defined(OS_ANDROID)
   SupervisedUserSharedSettingsService::RegisterProfilePrefs(registry);
   SupervisedUserSyncService::RegisterProfilePrefs(registry);
 #endif
   ChildAccountService::RegisterProfilePrefs(registry);
   SupervisedUserService::RegisterProfilePrefs(registry);
@@ skipping 220 matching lines @@
   // Added 8/2016.
   profile_prefs->ClearPref(kStaticEncodings);
   profile_prefs->ClearPref(kRecentlySelectedEncoding);
 
   // Added 9/2016.
   profile_prefs->ClearPref(kWebKitUsesUniversalDetector);
   profile_prefs->ClearPref(kWebKitAllowDisplayingInsecureContent);
 }
 
 }  // namespace chrome