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

components/invalidation/impl/ticl_profile_settings_provider.h

 // 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.
 
 #ifndef COMPONENTS_INVALIDATION_IMPL_TICL_PROFILE_SETTINGS_PROVIDER_H_
 #define COMPONENTS_INVALIDATION_IMPL_TICL_PROFILE_SETTINGS_PROVIDER_H_
 
 #include "base/compiler_specific.h"
 #include "base/macros.h"
+#include "base/prefs/pref_change_registrar.h"
 #include "components/invalidation/impl/ticl_settings_provider.h"
-#include "components/prefs/pref_change_registrar.h"
 
 class PrefService;
 
 namespace invalidation {
 
 // A specialization of TiclSettingsProvider that reads settings from user prefs.
 class TiclProfileSettingsProvider : public TiclSettingsProvider {
  public:
   explicit TiclProfileSettingsProvider(PrefService* prefs);
   ~TiclProfileSettingsProvider() override;
 
   // TiclInvalidationServiceSettingsProvider:
   bool UseGCMChannel() const override;
 
  private:
   PrefChangeRegistrar registrar_;
   PrefService* const prefs_;
 
   DISALLOW_COPY_AND_ASSIGN(TiclProfileSettingsProvider);
 };
 
 }  // namespace invalidation
 
 #endif  // COMPONENTS_INVALIDATION_IMPL_TICL_PROFILE_SETTINGS_PROVIDER_H_