Split //ios/chrome/browser in multiple targets.

ios/chrome/browser/prefs/browser_prefs.mm

 // 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 "ios/chrome/browser/prefs/browser_prefs.h"
 
 #include "components/autofill/core/browser/autofill_manager.h"
 #include "components/browsing_data/core/pref_names.h"
 #include "components/content_settings/core/browser/host_content_settings_map.h"
 #include "components/dom_distiller/core/distilled_page_prefs.h"
@@ skipping 21 matching lines @@
 #include "components/variations/service/variations_service.h"
 #include "components/web_resource/web_resource_pref_names.h"
 #include "ios/chrome/browser/browser_state/browser_state_info_cache.h"
 #include "ios/chrome/browser/first_run/first_run.h"
 #import "ios/chrome/browser/geolocation/omnibox_geolocation_local_state.h"
 #import "ios/chrome/browser/memory/memory_debugger_manager.h"
 #import "ios/chrome/browser/metrics/ios_chrome_metrics_service_client.h"
 #include "ios/chrome/browser/net/http_server_properties_manager_factory.h"
 #include "ios/chrome/browser/notification_promo.h"
 #include "ios/chrome/browser/pref_names.h"
+#include "ios/chrome/browser/pref_names.h"
 #include "ios/chrome/browser/signin/signin_manager_factory.h"
 #include "ios/public/provider/chrome/browser/chrome_browser_provider.h"
 #include "ui/base/l10n/l10n_util.h"
 
 void RegisterLocalStatePrefs(PrefRegistrySimple* registry) {
   BrowserStateInfoCache::RegisterPrefs(registry);
   flags_ui::PrefServiceFlagsStorage::RegisterPrefs(registry);
   gcm::GCMChannelStatusSyncer::RegisterPrefs(registry);
   ios::SigninManagerFactory::RegisterPrefs(registry);
   IOSChromeMetricsServiceClient::RegisterPrefs(registry);
@@ skipping 87 matching lines @@
 }
 
 // This method should be periodically pruned of year+ old migrations.
 void MigrateObsoleteBrowserStatePrefs(PrefService* prefs) {
   // Added 07/2014.
   translate::TranslatePrefs::MigrateUserPrefs(prefs, prefs::kAcceptLanguages);
 
   // Added 08/2015.
   prefs->ClearPref(::prefs::kSigninSharedAuthenticationUserId);
 }