Reduce usage of MessageLoopProxy in base/

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/ref_counted_delete_on_task_runner.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"
 
 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::RefCountedDeleteOnMessageLoop<WebDataServiceBackend> {
+    : public base::RefCountedDeleteOnTaskRunner<WebDataServiceBackend> {
  public:
   class Delegate {
    public:
     virtual ~Delegate() {}
 
     // Invoked when the backend has finished loading the db.
     virtual void DBLoaded(sql::InitStatus status) = 0;
   };
 
   WebDataServiceBackend(const base::FilePath& path,
@@ skipping 32 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::RefCountedDeleteOnTaskRunner<WebDataServiceBackend>;
   friend class base::DeleteHelper<WebDataServiceBackend>;
 
   virtual ~WebDataServiceBackend();
 
  private:
   // Commit the current transaction.
   void Commit();
 
   // Path to database file.
   base::FilePath db_path_;
@@ skipping 21 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_