Revert 56423 - Added classes to enable session sync functionality....

chrome/browser/sync/glue/session_change_processor.h

-// Copyright (c) 2010 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_GLUE_SESSION_CHANGE_PROCESSOR_H_
-#define CHROME_BROWSER_SYNC_GLUE_SESSION_CHANGE_PROCESSOR_H_
-#pragma once
-
-#include <vector>
-#include "base/basictypes.h"
-#include "chrome/browser/sessions/session_backend.h"
-#include "chrome/browser/sessions/session_service.h"
-#include "chrome/browser/sync/engine/syncapi.h"
-#include "chrome/browser/sync/glue/change_processor.h"
-#include "chrome/common/notification_observer.h"
-#include "chrome/common/notification_type.h"
-#include "chrome/common/notification_registrar.h"
-
-class NotificationDetails;
-class NotificationSource;
-class Profile;
-
-namespace browser_sync {
-
-class SessionModelAssociator;
-class UnrecoverableErrorHandler;
-
-// This class is responsible for taking changes from the
-// SessionService and applying them to the sync_api 'syncable'
-// model, and vice versa. All operations and use of this class are
-// from the UI thread.
-class SessionChangeProcessor : public ChangeProcessor,
-                               public NotificationObserver {
- public:
-  // Does not take ownership of either argument.
-  SessionChangeProcessor(
-      UnrecoverableErrorHandler* error_handler,
-      SessionModelAssociator* session_model_associator);
-  virtual ~SessionChangeProcessor();
-
-  // NotificationObserver implementation.
-  // BrowserSessionProvider -> sync_api model change application.
-  virtual void Observe(NotificationType type,
-                       const NotificationSource& source,
-                       const NotificationDetails& details);
-
-  // ChangeProcessor implementation.
-  // sync_api model -> BrowserSessionProvider change application.
-  virtual void ApplyChangesFromSyncModel(
-      const sync_api::BaseTransaction* trans,
-      const sync_api::SyncManager::ChangeRecord* changes,
-      int change_count);
-
- protected:
-  // ChangeProcessor implementation.
-  virtual void StartImpl(Profile* profile);
-  virtual void StopImpl();
- private:
-  void StartObserving();
-  void StopObserving();
-  void UpdateModel(const sync_api::BaseTransaction* trans,
-      const sync_api::SyncManager::ChangeRecord& change, bool associate);
-  SessionModelAssociator* session_model_associator_;
-  NotificationRegistrar notification_registrar_;
-
-  // Owner of the SessionService.  Non-NULL iff |running()| is true.
-  Profile* profile_;
-
-  DISALLOW_COPY_AND_ASSIGN(SessionChangeProcessor);
-};
-
-}  // namespace browser_sync
-
-#endif  // CHROME_BROWSER_SYNC_GLUE_SESSION_CHANGE_PROCESSOR_H_
-