TaskScheduler: migrate appcache database over to use it.

content/browser/appcache/appcache_service_impl.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 CONTENT_BROWSER_APPCACHE_APPCACHE_SERVICE_IMPL_H_
 #define CONTENT_BROWSER_APPCACHE_APPCACHE_SERVICE_IMPL_H_
 
 #include <stdint.h>
 
 #include <map>
@@ skipping 32 matching lines @@
 class AppCacheQuotaClient;
 class AppCachePolicy;
 class AppCacheServiceImplTest;
 class AppCacheStorageImplTest;
 class AppCacheStorage;
 
 // Refcounted container to manage the lifetime of the old storage instance
 // during Reinitialization.
 class CONTENT_EXPORT AppCacheStorageReference
     : public base::RefCounted<AppCacheStorageReference> {
-public:
+ public:
   AppCacheStorage* storage() const { return storage_.get(); }
-private:
+
+ private:
   friend class AppCacheServiceImpl;
   friend class base::RefCounted<AppCacheStorageReference>;
   AppCacheStorageReference(std::unique_ptr<AppCacheStorage> storage);
   ~AppCacheStorageReference();
 
   std::unique_ptr<AppCacheStorage> storage_;
 };
 
 // Class that manages the application cache service. Sends notifications
 // to many frontends.  One instance per user-profile. Each instance has
@@ skipping 15 matching lines @@
         AppCacheStorageReference* old_storage_ref) {}
     virtual ~Observer() {}
   };
 
   // If not using quota management, the proxy may be NULL.
   explicit AppCacheServiceImpl(storage::QuotaManagerProxy* quota_manager_proxy);
   ~AppCacheServiceImpl() override;
 
   void Initialize(
       const base::FilePath& cache_directory,
-      const scoped_refptr<base::SingleThreadTaskRunner>& db_thread,
       const scoped_refptr<base::SingleThreadTaskRunner>& cache_thread);
 
   void AddObserver(Observer* observer) {
     observers_.AddObserver(observer);
   }
 
   void RemoveObserver(Observer* observer) {
     observers_.RemoveObserver(observer);
   }
 
@@ skipping 92 matching lines @@
   class GetInfoHelper;
   class CheckResponseHelper;
 
   using PendingAsyncHelpers =
       std::map<AsyncHelper*, std::unique_ptr<AsyncHelper>>;
   using BackendMap = std::map<int, AppCacheBackendImpl*>;
 
   void Reinitialize();
 
   base::FilePath cache_directory_;
-  scoped_refptr<base::SingleThreadTaskRunner> db_thread_;
+  scoped_refptr<base::SequencedTaskRunner> db_task_runner_;
   scoped_refptr<base::SingleThreadTaskRunner> cache_thread_;
   AppCachePolicy* appcache_policy_;
   AppCacheQuotaClient* quota_client_;
   AppCacheExecutableHandlerFactory* handler_factory_;
   std::unique_ptr<AppCacheStorage> storage_;
   scoped_refptr<storage::SpecialStoragePolicy> special_storage_policy_;
   scoped_refptr<storage::QuotaManagerProxy> quota_manager_proxy_;
   PendingAsyncHelpers pending_helpers_;
   BackendMap backends_;  // One 'backend' per child process.
   // Context for use during cache updates.
   net::URLRequestContext* request_context_;
   // If true, nothing (not even session-only data) should be deleted on exit.
   bool force_keep_session_state_;
   base::Time last_reinit_time_;
   base::TimeDelta next_reinit_delay_;
   base::OneShotTimer reinit_timer_;
   base::ObserverList<Observer> observers_;
 
  private:
   base::WeakPtrFactory<AppCacheServiceImpl> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(AppCacheServiceImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_APPCACHE_APPCACHE_SERVICE_IMPL_H_