Revert of Delete base/prefs and update callers to use components.

components/google/core/browser/google_url_tracker.cc

 // 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.
 
 #include "components/google/core/browser/google_url_tracker.h"
 
 #include <utility>
 
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/location.h"
 #include "base/macros.h"
+#include "base/prefs/pref_service.h"
 #include "base/single_thread_task_runner.h"
 #include "base/strings/string_util.h"
 #include "base/thread_task_runner_handle.h"
 #include "components/data_use_measurement/core/data_use_user_data.h"
 #include "components/google/core/browser/google_pref_names.h"
 #include "components/google/core/browser/google_switches.h"
 #include "components/google/core/browser/google_util.h"
 #include "components/pref_registry/pref_registry_syncable.h"
-#include "components/prefs/pref_service.h"
 #include "net/base/load_flags.h"
 #include "net/url_request/url_fetcher.h"
 #include "net/url_request/url_request_status.h"
 
 
 const char GoogleURLTracker::kDefaultGoogleHomepage[] =
     "https://www.google.com/";
 const char GoogleURLTracker::kSearchDomainCheckURL[] =
     "https://www.google.com/searchdomaincheck?format=domain&type=chrome";
 
@@ skipping 152 matching lines @@
   // Also retry kMaxRetries times on network change errors. A network change can
   // propagate through Chrome in various stages, so it's possible for this code
   // to be reached via OnNetworkChanged(), and then have the fetch we kick off
   // be canceled due to e.g. the DNS server changing at a later time. In general
   // it's not possible to ensure that by the time we reach here any requests we
   // start won't be canceled in this fashion, so retrying is the best we can do.
   fetcher_->SetAutomaticallyRetryOnNetworkChanges(kMaxRetries);
 
   fetcher_->Start();
 }