Implement new SyncAPI and convert Preferences to it.

chrome/browser/sync/syncable_service.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_SYNCABLE_SERVICE_H_
-#define CHROME_BROWSER_SYNC_SYNCABLE_SERVICE_H_
-#pragma once
-
-#include "chrome/browser/sync/engine/syncapi.h"  // TODO(zea): remove this.
-#include "chrome/browser/sync/glue/model_associator.h"
-
-class ProfileSyncService;
-
-namespace browser_sync {
-class GenericChangeProcessor;
-}
-
-// TODO(sync): Define SyncData type for passing sync changes here.
-
-// TODO(sync): Have this become an independent class and deprecate
-// AssociatorInterface.
-class SyncableService : public browser_sync::AssociatorInterface {
- public:
-  SyncableService();
-  virtual ~SyncableService();
-
-  // Future methods for SyncableService:
-  // StartSyncing
-  // StopSyncing
-  // GetAllSyncData
-  // ProcessNewSyncData (replaces ApplyChangeFromSync)
-
-  // TODO(sync): remove these once we switch to the real SyncableService
-  // interface. This just keeps us going while we use the model associator/
-  // change processor way of things.
-
-  // AssociatorInterface implementation.
-  virtual bool AssociateModels() = 0;
-  virtual bool DisassociateModels() = 0;
-  virtual bool SyncModelHasUserCreatedNodes(bool* has_nodes) = 0;
-  virtual void AbortAssociation() = 0;
-  virtual bool CryptoReadyIfNecessary() = 0;
-
-  // Receive changes from change processor (the ChangeRecord dependency is
-  // the reason we must include syncapi.h).
-  virtual void ApplyChangesFromSync(
-      const sync_api::BaseTransaction* trans,
-      const sync_api::SyncManager::ChangeRecord* changes,
-      int change_count) = 0;
-  virtual void SetupSync(
-      ProfileSyncService* sync_service,
-      browser_sync::GenericChangeProcessor* change_processor) = 0;
-};
-
-#endif  // CHROME_BROWSER_SYNC_SYNCABLE_SERVICE_H_