Delete base/prefs and update callers to use components.

ios/chrome/browser/metrics/ios_chrome_metrics_services_manager_client.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 "ios/chrome/browser/metrics/ios_chrome_metrics_services_manager_client.h"
 
 #include "base/command_line.h"
 #include "base/logging.h"
-#include "base/prefs/pref_service.h"
 #include "components/metrics/metrics_state_manager.h"
+#include "components/prefs/pref_service.h"
 #include "components/rappor/rappor_service.h"
 #include "components/variations/service/variations_service.h"
 #include "ios/chrome/browser/application_context.h"
 #include "ios/chrome/browser/chrome_switches.h"
 #include "ios/chrome/browser/metrics/ios_chrome_metrics_service_accessor.h"
 #include "ios/chrome/browser/metrics/ios_chrome_metrics_service_client.h"
 #include "ios/chrome/browser/ui/browser_otr_state.h"
 #include "ios/chrome/browser/variations/ios_chrome_variations_service_client.h"
 #include "ios/chrome/browser/variations/ios_ui_string_overrider_factory.h"
 #include "ios/public/provider/chrome/browser/chrome_browser_provider.h"
@@ skipping 71 matching lines @@
   DCHECK(thread_checker_.CalledOnValidThread());
   if (!metrics_state_manager_) {
     metrics_state_manager_ = metrics::MetricsStateManager::Create(
         local_state_, base::Bind(&IOSChromeMetricsServiceAccessor::
                                      IsMetricsAndCrashReportingEnabled),
         base::Bind(&PostStoreMetricsClientInfo),
         base::Bind(&LoadMetricsClientInfo));
   }
   return metrics_state_manager_.get();
 }