[sync] Set up notification-free infra for triggering local sync refresh

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>
@@ skipping 226 matching lines @@
   ~ProfileSyncService() override;
 
   // Initializes the object. This must be called at most once, and
   // immediately after an object of this class is constructed.
   void Initialize();
 
   // sync_driver::SyncService implementation
   bool HasSyncSetupCompleted() const override;
   bool IsSyncAllowed() const override;
   bool IsSyncActive() const override;
+  void TriggerRefresh(const syncer::ModelTypeSet& types) override;
   void OnDataTypeRequestsSyncStartup(syncer::ModelType type) override;
   bool CanSyncStart() const override;
   void RequestStop(SyncStopDataFate data_fate) override;
   void RequestStart() override;
   syncer::ModelTypeSet GetActiveDataTypes() const override;
   sync_driver::SyncClient* GetSyncClient() const override;
   syncer::ModelTypeSet GetPreferredDataTypes() const override;
   void OnUserChoseDatatypes(bool sync_everything,
                             syncer::ModelTypeSet chosen_types) override;
   void SetSyncSetupCompleted() override;
@@ skipping 729 matching lines @@
   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_