Migrate Extensions code to Task Scheduler API

chrome/browser/extensions/api/storage/sync_value_store_cache.h

 // Copyright 2014 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_EXTENSIONS_API_STORAGE_SYNC_VALUE_STORE_CACHE_H_
 #define CHROME_BROWSER_EXTENSIONS_API_STORAGE_SYNC_VALUE_STORE_CACHE_H_
 
 #include <memory>
 
 #include "base/compiler_specific.h"
@@ skipping 27 matching lines @@
 
   syncer::SyncableService* GetSyncableService(syncer::ModelType type) const;
 
   // ValueStoreCache implementation:
   void RunWithValueStoreForExtension(
       const StorageCallback& callback,
       scoped_refptr<const Extension> extension) override;
   void DeleteStorageSoon(const std::string& extension_id) override;
 
  private:
-  void InitOnFileThread(const scoped_refptr<ValueStoreFactory>& factory,
-                        const scoped_refptr<SettingsObserverList>& observers,
-                        const base::FilePath& profile_path);
+  void InitOnBackend(const scoped_refptr<ValueStoreFactory>& factory,
+                     const scoped_refptr<SettingsObserverList>& observers,
+                     const base::FilePath& profile_path);
 
   bool initialized_;
   std::unique_ptr<SyncStorageBackend> app_backend_;
   std::unique_ptr<SyncStorageBackend> extension_backend_;
 
   DISALLOW_COPY_AND_ASSIGN(SyncValueStoreCache);
 };
 
 }  // namespace extensions
 
 #endif  // CHROME_BROWSER_EXTENSIONS_API_STORAGE_SYNC_VALUE_STORE_CACHE_H_