Apps/Extensions Sync refactoring -- delete most of the old glue, implement new sync API.

chrome/browser/sync/glue/extension_change_processor.h

-// Copyright (c) 2011 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_EXTENSION_CHANGE_PROCESSOR_H_
-#define CHROME_BROWSER_SYNC_GLUE_EXTENSION_CHANGE_PROCESSOR_H_
-#pragma once
-
-#include "base/basictypes.h"
-#include "chrome/browser/sync/glue/change_processor.h"
-#include "chrome/browser/sync/glue/extension_sync_traits.h"
-#include "chrome/browser/sync/internal_api/sync_manager.h"
-#include "content/common/content_notification_types.h"
-#include "content/common/notification_observer.h"
-#include "content/common/notification_registrar.h"
-
-class ExtensionServiceInterface;
-
-namespace browser_sync {
-
-class UnrecoverableErrorHandler;
-
-// This class is responsible for taking changes from the
-// ExtensionService 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 ExtensionChangeProcessor : public ChangeProcessor,
-                                 public NotificationObserver {
- public:
-  // Does not take ownership of |error_handler|.
-  explicit ExtensionChangeProcessor(UnrecoverableErrorHandler* error_handler);
-  virtual ~ExtensionChangeProcessor();
-
-  // NotificationObserver implementation.
-  // BrowserExtensionProvider -> sync_api model change application.
-  virtual void Observe(int type,
-                       const NotificationSource& source,
-                       const NotificationDetails& details);
-
-  // ChangeProcessor implementation.
-  // sync_api model -> BrowserExtensionProvider 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();
-
-  NotificationRegistrar notification_registrar_;
-  const ExtensionSyncTraits traits_;
-
-  // Non-NULL iff |running()| is true.
-  Profile* profile_;
-  ExtensionServiceInterface* extension_service_;
-
-  DISALLOW_COPY_AND_ASSIGN(ExtensionChangeProcessor);
-};
-
-}  // namespace browser_sync
-
-#endif  // CHROME_BROWSER_SYNC_GLUE_EXTENSION_CHANGE_PROCESSOR_H_