Get rid of sync_preferences::SyncedPrefObserver inheritance.

chrome/browser/chromeos/arc/arc_session_manager.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_SESSION_MANAGER_H_
 #define CHROME_BROWSER_CHROMEOS_ARC_ARC_SESSION_MANAGER_H_
 
 #include <memory>
 #include <ostream>
 #include <string>
 
 #include "base/macros.h"
 #include "base/memory/weak_ptr.h"
 #include "base/observer_list.h"
 #include "base/timer/timer.h"
 #include "chrome/browser/chromeos/arc/arc_support_host.h"
 #include "chrome/browser/chromeos/policy/android_management_client.h"
 #include "components/arc/arc_session_observer.h"
 #include "components/prefs/pref_change_registrar.h"
 #include "components/sync_preferences/pref_service_syncable_observer.h"
-#include "components/sync_preferences/synced_pref_observer.h"
 
 class ArcAppLauncher;
 class Profile;
 
 namespace ash {
 class ShelfDelegate;
 }
 
 namespace user_prefs {
 class PrefRegistrySyncable;
 }
 
 namespace arc {
 
 class ArcAndroidManagementChecker;
 class ArcAuthCodeFetcher;
 class ArcAuthContext;
 class ArcSessionRunner;
 class ArcTermsOfServiceNegotiator;
 enum class ProvisioningResult : int;
 
 // This class proxies the request from the client to fetch an auth code from
 // LSO. It lives on the UI thread.
 class ArcSessionManager : public ArcSessionObserver,
                           public ArcSupportHost::Observer,
-                          public sync_preferences::PrefServiceSyncableObserver,
-                          public sync_preferences::SyncedPrefObserver {
+                          public sync_preferences::PrefServiceSyncableObserver {
  public:
   // Represents each State of ARC session.
   // NOT_INITIALIZED: represents the state that the Profile is not yet ready
   //   so that this service is not yet initialized, or Chrome is being shut
   //   down so that this is destroyed.
   // STOPPED: ARC session is not running, or being terminated.
   // SHOWING_TERMS_OF_SERVICE: "Terms Of Service" page is shown on ARC support
   //   Chrome app.
   // CHECKING_ANDROID_MANAGEMENT: Checking Android management status. Note that
   //   the status is checked for each ARC session starting, but this is the
@@ skipping 117 matching lines @@
   void EnableArc();
   void DisableArc();
 
   // Called from the Chrome OS metrics provider to record Arc.State
   // periodically.
   void RecordArcState();
 
   // sync_preferences::PrefServiceSyncableObserver
   void OnIsSyncingChanged() override;
 
-  // sync_preferences::SyncedPrefObserver
-  void OnSyncedPrefChanged(const std::string& path, bool from_sync) override;
-
   // ArcSupportHost::Observer:
   void OnWindowClosed() override;
   void OnTermsAgreed(bool is_metrics_enabled,
                      bool is_backup_and_restore_enabled,
                      bool is_location_service_enabled) override;
   void OnRetryClicked() override;
   void OnSendFeedbackClicked() override;
 
   // Stops ARC without changing ArcEnabled preference.
   void StopArc();
@@ skipping 96 matching lines @@
   DISALLOW_COPY_AND_ASSIGN(ArcSessionManager);
 };
 
 // Outputs the stringified |state| to |os|. This is only for logging purposes.
 std::ostream& operator<<(std::ostream& os,
                          const ArcSessionManager::State& state);
 
 }  // namespace arc
 
 #endif  // CHROME_BROWSER_CHROMEOS_ARC_ARC_SESSION_MANAGER_H_