Add OnceCallback support to PostTaskAndReplyWithResult

components/drive/chromeos/change_list_loader.cc

 // 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.
 
 #include "components/drive/chromeos/change_list_loader.h"
 
 #include <stddef.h>
 
 #include <set>
 #include <utility>
 
 #include "base/callback.h"
 #include "base/callback_helpers.h"
 #include "base/macros.h"
 #include "base/memory/ptr_util.h"
 #include "base/metrics/histogram_macros.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/synchronization/cancellation_flag.h"
 #include "base/threading/thread_task_runner_handle.h"
 #include "base/time/time.h"
 #include "components/drive/chromeos/change_list_loader_observer.h"
 #include "components/drive/chromeos/change_list_processor.h"
 #include "components/drive/chromeos/resource_metadata.h"
+#include "components/drive/drive_api_util.h"
 #include "components/drive/event_logger.h"
 #include "components/drive/file_system_core_util.h"
 #include "components/drive/job_scheduler.h"
 #include "google_apis/drive/drive_api_parser.h"
 #include "url/gurl.h"
 
 namespace drive {
 namespace internal {
 
 typedef base::Callback<void(FileError,
@@ skipping 535 matching lines @@
   ChangeListProcessor* change_list_processor =
       new ChangeListProcessor(resource_metadata_, in_shutdown_.get());
   // Don't send directory content change notification while performing
   // the initial content retrieval.
   const bool should_notify_changed_directories = is_delta_update;
 
   logger_->Log(logging::LOG_INFO,
                "Apply change lists (is delta: %d)",
                is_delta_update);
   loader_controller_->ScheduleRun(base::Bind(
-      base::IgnoreResult(
-          &base::PostTaskAndReplyWithResult<FileError, FileError>),
-      base::RetainedRef(blocking_task_runner_), FROM_HERE,
+      &drive::util::RunAsyncTask, base::RetainedRef(blocking_task_runner_),
+      FROM_HERE,
       base::Bind(&ChangeListProcessor::Apply,
                  base::Unretained(change_list_processor),
                  base::Passed(&about_resource), base::Passed(&change_lists),
                  is_delta_update),
       base::Bind(&ChangeListLoader::LoadChangeListFromServerAfterUpdate,
                  weak_ptr_factory_.GetWeakPtr(),
                  base::Owned(change_list_processor),
                  should_notify_changed_directories, base::Time::Now())));
 }
 
@@ skipping 15 matching lines @@
   }
 
   OnChangeListLoadComplete(error);
 
   for (auto& observer : observers_)
     observer.OnLoadFromServerComplete();
 }
 
 }  // namespace internal
 }  // namespace drive