Remove dependency of WebData on content

components/webdata/common/web_data_service_backend.h

 // Copyright 2013 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 COMPONENTS_WEBDATA_COMMON_WEB_DATA_SERVICE_BACKEND_H_
 #define COMPONENTS_WEBDATA_COMMON_WEB_DATA_SERVICE_BACKEND_H_
 
 #include "base/basictypes.h"
 #include "base/callback_forward.h"
 #include "base/compiler_specific.h"
 #include "base/files/file_path.h"
 #include "base/memory/ref_counted.h"
+#include "base/memory/ref_counted_delete_on_message_loop.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/scoped_vector.h"
 #include "components/webdata/common/web_database_service.h"
 #include "components/webdata/common/webdata_export.h"
-#include "content/public/browser/browser_thread.h"
-
 
 class WebDatabase;
 class WebDatabaseTable;
 class WebDataRequest;
 class WebDataRequestManager;
 
 namespace tracked_objects {
 class Location;
 }
 
 // WebDataServiceBackend handles all database tasks posted by
 // WebDatabaseService. It is refcounted to allow asynchronous destruction on the
 // DB thread.
 
 // TODO(caitkp): Rename this class to WebDatabaseBackend.
 
 class WEBDATA_EXPORT WebDataServiceBackend
-    : public base::RefCountedThreadSafe<
-          WebDataServiceBackend,
-          content::BrowserThread::DeleteOnDBThread> {
+    : public base::RefCountedDeleteOnMessageLoop<WebDataServiceBackend> {
  public:
   class Delegate {
     public:
     virtual ~Delegate() {}
 
     // Invoked when the backend has finished loading the db.
     virtual void DBLoaded(sql::InitStatus status) = 0;
   };
 
-  explicit WebDataServiceBackend(const base::FilePath& path,
-                                 Delegate* delegate);
+  WebDataServiceBackend(const base::FilePath& path,
+                        Delegate* delegate,
+                        const scoped_refptr<base::MessageLoopProxy>& db_thread);
 
   // Must call only before InitDatabaseWithCallback.
   void AddTable(scoped_ptr<WebDatabaseTable> table);
 
   // Initializes the database and notifies caller via callback when complete.
   // Callback is called synchronously.
   void InitDatabase();
 
   // Opens the database file from the profile path if an init has not yet been
   // attempted. Separated from the constructor to ease construction/destruction
@@ skipping 21 matching lines @@
   scoped_ptr<WDTypedResult> ExecuteReadTask(
       const WebDatabaseService::ReadTask& task);
 
   const scoped_refptr<WebDataRequestManager>& request_manager() {
     return request_manager_;
   }
 
   WebDatabase* database() { return db_.get(); }
 
  protected:
+  friend class base::RefCountedDeleteOnMessageLoop<WebDataServiceBackend>;
+  friend class base::DeleteHelper<WebDataServiceBackend>;
+
   virtual ~WebDataServiceBackend();
 
  private:
-  friend struct content::BrowserThread::DeleteOnThread<
-      content::BrowserThread::DB>;
-  friend class base::DeleteHelper<WebDataServiceBackend>;
-  // We have to friend RCTS<> so WIN shared-lib build is happy
-  // (http://crbug/112250).
-  friend class base::RefCountedThreadSafe<WebDataServiceBackend,
-      content::BrowserThread::DeleteOnDBThread>;
-
   // Commit the current transaction.
   void Commit();
 
   // Path to database file.
   base::FilePath db_path_;
 
   // The tables that participate in managing the database. These are
   // owned here but other than that this class does nothing with
   // them. Their initialization is in whatever factory creates
   // WebDatabaseService, and lookup by type is provided by the
@@ skipping 16 matching lines @@
   // fails), used to avoid continually trying to reinit if the db init fails.
   bool init_complete_;
 
   // Delegate. See the class definition above for more information.
   scoped_ptr<Delegate> delegate_;
 
   DISALLOW_COPY_AND_ASSIGN(WebDataServiceBackend);
 };
 
 #endif  // COMPONENTS_WEBDATA_COMMON_WEB_DATA_SERVICE_BACKEND_H_