Create a common base class for all the webdatas

chrome/browser/webdata/web_data_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.
 
 // Chromium settings and storage represent user-selected preferences and
 // information and MUST not be extracted, overwritten or modified except
 // through Chromium defined APIs.
 
 #ifndef CHROME_BROWSER_WEBDATA_WEB_DATA_SERVICE_H__
 #define CHROME_BROWSER_WEBDATA_WEB_DATA_SERVICE_H__
 
 #include <map>
 #include <string>
 #include <vector>
 
 #include "base/callback_forward.h"
 #include "base/files/file_path.h"
 #include "base/location.h"
 #include "base/memory/ref_counted.h"
 #include "base/sequenced_task_runner_helpers.h"
 #include "base/synchronization/lock.h"
 #include "chrome/browser/api/webdata/autofill_web_data_service.h"
 #include "chrome/browser/api/webdata/web_data_results.h"
 #include "chrome/browser/api/webdata/web_data_service_base.h"
 #include "chrome/browser/api/webdata/web_data_service_consumer.h"
 #include "chrome/browser/search_engines/template_url.h"
 #include "chrome/browser/search_engines/template_url_id.h"
 #include "chrome/browser/webdata/keyword_table.h"
-#include "chrome/browser/webdata/web_data_request_manager.h"
 #include "chrome/browser/webdata/web_database.h"
-#include "content/public/browser/browser_thread.h"
-#include "sql/init_status.h"
 
 class AutocompleteSyncableService;
 class AutofillChange;
 class AutofillProfileSyncableService;
 struct DefaultWebIntentService;
 class GURL;
 #if defined(OS_WIN)
 struct IE7PasswordInfo;
 #endif
 class MessageLoop;
@@ skipping 53 matching lines @@
   // Identifies the ID of the TemplateURL that is the default search. A value of
   // 0 indicates there is no default search provider.
   int64 default_search_provider_id;
   // Version of the built-in keywords. A value of 0 indicates a first run.
   int builtin_keyword_version;
 };
 
 class WebDataServiceConsumer;
 
 class WebDataService
-    : public base::RefCountedThreadSafe<WebDataService,
-          content::BrowserThread::DeleteOnUIThread>,
-      public WebDataServiceBase,
+    : public WebDataServiceBase,
       public AutofillWebData {
  public:
   // Retrieve a WebDataService for the given context.
   static scoped_refptr<WebDataService> FromBrowserContext(
       content::BrowserContext* context);
 
   WebDataService();
 
   // WebDataServiceBase implementation.
-  virtual void CancelRequest(Handle h) OVERRIDE;
-  virtual content::NotificationSource GetNotificationSource() OVERRIDE;
+  virtual void ShutdownOnUIThread() OVERRIDE;
+  virtual void Init(const base::FilePath& path) OVERRIDE;
 
   // Notifies listeners on the UI thread that multiple changes have been made to
   // to Autofill records of the database.
   // NOTE: This method is intended to be called from the DB thread.  It
   // it asynchronously notifies listeners on the UI thread.
   // |web_data_service| may be NULL for testing purposes.
   static void NotifyOfMultipleAutofillChanges(WebDataService* web_data_service);
 
-  // Shutdown the web data service. The service can no longer be used after this
-  // call.
-  void ShutdownOnUIThread();
 
-  // Initializes the web data service.
-  void Init(const base::FilePath& path);
-
-  // Unloads the database without actually shutting down the service.  This can
-  // be used to temporarily reduce the browser process' memory footprint.
-  void UnloadDatabase();
-
-  // Unloads the database permanently and shuts down service.
-  void ShutdownDatabase();
-
-  // Returns true if the database load has completetd successfully, and
-  // ShutdownOnUIThread has not yet been called.
-  virtual bool IsDatabaseLoaded();
-
-  // Returns a pointer to the DB (used by SyncableServices). May return NULL if
-  // the database is not loaded or otherwise unavailable. Must be called on
-  // DBThread.
-  virtual WebDatabase* GetDatabase();
 
   //////////////////////////////////////////////////////////////////////////////
   //
   // Keywords
   //
   //////////////////////////////////////////////////////////////////////////////
 
   // As the database processes requests at a later date, all deletion is
   // done on the background thread.
   //
@@ skipping 159 matching lines @@
   // in this table. The returned service is owned by |this| object.
   virtual AutofillProfileSyncableService*
       GetAutofillProfileSyncableService() const;
 
   // Returns the syncable service for field autocomplete stored in this table.
   // The returned service is owned by |this| object.
   virtual AutocompleteSyncableService*
       GetAutocompleteSyncableService() const;
 
  protected:
+  // TODO (caitkp): We probably don't need these anymore.
   friend class TemplateURLServiceTest;
   friend class TemplateURLServiceTestingProfile;
   friend class WebDataServiceTest;
   friend class WebDataRequest;
 
   virtual ~WebDataService();
 
   //////////////////////////////////////////////////////////////////////////////
   //
   // The following methods are only invoked in the web data service thread.
   //
   //////////////////////////////////////////////////////////////////////////////
  private:
-  friend struct content::BrowserThread::DeleteOnThread<
-      content::BrowserThread::UI>;
-  friend class base::DeleteHelper<WebDataService>;
-
   // Initialize any syncable services.
   void InitializeSyncableServices();
 
   // Deletes the syncable services.
   void ShutdownSyncableServices();
 
-  void DBInitFailed(sql::InitStatus sql_status);
-  void NotifyDatabaseLoadedOnUIThread();
-  void DatabaseInitOnDB(sql::InitStatus status);
-
   //////////////////////////////////////////////////////////////////////////////
   //
   // Keywords.
   //
   //////////////////////////////////////////////////////////////////////////////
   WebDatabase::State AddKeywordImpl(
       const TemplateURLData& data, WebDatabase* db);
   WebDatabase::State RemoveKeywordImpl(
       TemplateURLID id, WebDatabase* db);
   WebDatabase::State UpdateKeywordImpl(
@@ skipping 98 matching lines @@
   scoped_ptr<WDTypedResult> GetCreditCardsImpl(WebDatabase* db);
   WebDatabase::State RemoveAutofillProfilesAndCreditCardsModifiedBetweenImpl(
       const base::Time& delete_begin, const base::Time& delete_end,
       WebDatabase* db);
 
   // Callbacks to ensure that sensitive info is destroyed if request is
   // cancelled.
   void DestroyAutofillProfileResult(const WDTypedResult* result);
   void DestroyAutofillCreditCardResult(const WDTypedResult* result);
 
-  // Our database service.
-  scoped_ptr<WebDatabaseService> wdbs_;
-
-  // True if we've received a notification that the WebDatabase has loaded.
-  bool db_loaded_;
-
   // Syncable services for the database data.  We own the services, but don't
   // use |scoped_ptr|s because the lifetimes must be managed on the database
   // thread.
   // Currently only Autocomplete and Autofill profiles use the new Sync API, but
   // all the database data should migrate to this API over time.
   AutocompleteSyncableService* autocomplete_syncable_service_;
   AutofillProfileSyncableService* autofill_profile_syncable_service_;
 
   DISALLOW_COPY_AND_ASSIGN(WebDataService);
 };
 
 #endif  // CHROME_BROWSER_WEBDATA_WEB_DATA_SERVICE_H__