Revert of [Sync] Move //components/sync to the syncer namespace. (patchset #5 id:40001 of https://co

chrome/browser/chromeos/login/signin/auth_sync_observer.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 CHROME_BROWSER_CHROMEOS_LOGIN_SIGNIN_AUTH_SYNC_OBSERVER_H_
 #define CHROME_BROWSER_CHROMEOS_LOGIN_SIGNIN_AUTH_SYNC_OBSERVER_H_
 
 #include <string>
 
 #include "base/compiler_specific.h"
 #include "base/macros.h"
 #include "components/keyed_service/core/keyed_service.h"
 #include "components/sync/driver/sync_service_observer.h"
 
 class Profile;
 
 namespace chromeos {
 
 // This class is responsible for detecting authentication problems reported
 // by sync service and
 class AuthSyncObserver : public KeyedService,
-                         public syncer::SyncServiceObserver {
+                         public sync_driver::SyncServiceObserver {
  public:
   explicit AuthSyncObserver(Profile* user_profile);
   ~AuthSyncObserver() override;
 
   void StartObserving();
 
  private:
   friend class AuthSyncObserverFactory;
 
   // KeyedService implementation.
   void Shutdown() override;
 
-  // syncer::SyncServiceObserver implementation.
+  // sync_driver::SyncServiceObserver implementation.
   void OnStateChanged() override;
 
   // Called on attempt to restore supervised user token.
   void OnSupervisedTokenLoaded(const std::string& token);
 
   Profile* profile_;
 
   DISALLOW_COPY_AND_ASSIGN(AuthSyncObserver);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_LOGIN_SIGNIN_AUTH_SYNC_OBSERVER_H_