[sync] Abstract most ProfileSyncService //chrome deps

chrome/browser/sync/profile_sync_service.h

 // Copyright (c) 2012 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_SYNC_PROFILE_SYNC_SERVICE_H_
 #define CHROME_BROWSER_SYNC_PROFILE_SYNC_SERVICE_H_
 
 #include <set>
 #include <string>
 #include <utility>
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
 #include "base/files/file_path.h"
 #include "base/gtest_prod_util.h"
 #include "base/location.h"
 #include "base/memory/memory_pressure_listener.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/weak_ptr.h"
 #include "base/observer_list.h"
 #include "base/strings/string16.h"
+#include "base/threading/thread_checker.h"
 #include "base/time/time.h"
 #include "base/timer/timer.h"
 #include "chrome/browser/sync/glue/sync_backend_host.h"
 #include "chrome/browser/sync/sessions/sessions_sync_manager.h"
 #include "components/keyed_service/core/keyed_service.h"
 #include "components/signin/core/browser/signin_manager_base.h"
 #include "components/sync_driver/backup_rollback_controller.h"
 #include "components/sync_driver/data_type_controller.h"
 #include "components/sync_driver/data_type_manager.h"
 #include "components/sync_driver/data_type_manager_observer.h"
@@ skipping 945 matching lines @@
   bool catch_up_configure_in_progress_;
 
   // Whether the major version has changed since the last time Chrome ran,
   // and therefore a passphrase required state should result in prompting
   // the user. This logic is only enabled on platforms that consume the
   // IsPassphrasePrompted sync preference.
   bool passphrase_prompt_triggered_by_version_;
 
   content::NotificationRegistrar registrar_;
 
+  // Used to ensure that certain operations are performed on the thread that
+  // this object was created on.
+  base::ThreadChecker thread_checker_;
+
   base::WeakPtrFactory<ProfileSyncService> weak_factory_;
 
   // We don't use |weak_factory_| for the StartupController because the weak
   // ptrs should be bound to the lifetime of ProfileSyncService and not to the
   // [Initialize -> sync disabled/shutdown] lifetime.  We don't pass
   // StartupController an Unretained reference to future-proof against
   // the controller impl changing to post tasks. Therefore, we have a separate
   // factory.
   base::WeakPtrFactory<ProfileSyncService> startup_controller_weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(ProfileSyncService);
 };
 
 bool ShouldShowActionOnUI(
     const syncer::SyncProtocolError& error);
 
 
 #endif  // CHROME_BROWSER_SYNC_PROFILE_SYNC_SERVICE_H_