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

chrome/browser/chromeos/arc/arc_auth_service.h

 // Copyright 2016 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.
 
 #ifndef CHROME_BROWSER_CHROMEOS_ARC_ARC_AUTH_SERVICE_H_
 #define CHROME_BROWSER_CHROMEOS_ARC_ARC_AUTH_SERVICE_H_
 
 #include <ostream>
 
 #include "base/macros.h"
 #include "base/observer_list.h"
+#include "base/prefs/pref_change_registrar.h"
 #include "base/threading/thread_checker.h"
 #include "chrome/browser/chromeos/arc/arc_auth_ui.h"
 #include "components/arc/arc_bridge_service.h"
 #include "components/arc/arc_service.h"
 #include "components/arc/auth/arc_auth_fetcher.h"
 #include "components/arc/common/auth.mojom.h"
-#include "components/prefs/pref_change_registrar.h"
 #include "mojo/public/cpp/bindings/binding.h"
 
 class PrefService;
 class Profile;
 
 namespace user_prefs {
 class PrefRegistrySyncable;
 }
 
 namespace arc {
@@ skipping 85 matching lines @@
   std::string auth_code_;
 
   DISALLOW_COPY_AND_ASSIGN(ArcAuthService);
 };
 
 std::ostream& operator<<(std::ostream& os, const ArcAuthService::State& state);
 
 }  // namespace arc
 
 #endif  // CHROME_BROWSER_CHROMEOS_ARC_ARC_AUTH_SERVICE_H_